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diff --git a/node_modules/pbkdf2/LICENSE b/node_modules/pbkdf2/LICENSE
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+++ b/node_modules/pbkdf2/LICENSE
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+The MIT License (MIT)
+
+Copyright (c) 2014 Daniel Cousens
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/node_modules/pbkdf2/README.md b/node_modules/pbkdf2/README.md
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+++ b/node_modules/pbkdf2/README.md
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+# pbkdf2
+
+[![NPM Package](https://img.shields.io/npm/v/pbkdf2.svg?style=flat-square)](https://www.npmjs.org/package/pbkdf2)
+[![Build Status](https://img.shields.io/travis/crypto-browserify/pbkdf2.svg?branch=master&style=flat-square)](https://travis-ci.org/crypto-browserify/pbkdf2)
+[![Dependency status](https://img.shields.io/david/crypto-browserify/pbkdf2.svg?style=flat-square)](https://david-dm.org/crypto-browserify/pbkdf2#info=dependencies)
+
+[![js-standard-style](https://cdn.rawgit.com/feross/standard/master/badge.svg)](https://github.com/feross/standard)
+
+This library provides the functionality of PBKDF2 with the ability to use any supported hashing algorithm returned from `crypto.getHashes()`
+
+
+## Usage
+
+```js
+var pbkdf2 = require('pbkdf2')
+var derivedKey = pbkdf2.pbkdf2Sync('password', 'salt', 1, 32, 'sha512')
+
+...
+```
+
+For more information on the API,  please see the relevant [Node documentation](https://nodejs.org/api/crypto.html#crypto_crypto_pbkdf2_password_salt_iterations_keylen_digest_callback).
+
+
+## Credits
+
+This module is a derivative of [cryptocoinjs/pbkdf2-sha256](https://github.com/cryptocoinjs/pbkdf2-sha256/), so thanks to [JP Richardson](https://github.com/jprichardson/) for laying the ground work.
+
+Thank you to [FangDun Cai](https://github.com/fundon) for donating the package name on npm, if you're looking for his previous module it is located at [fundon/pbkdf2](https://github.com/fundon/pbkdf2).
diff --git a/node_modules/pbkdf2/browser.js b/node_modules/pbkdf2/browser.js
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+++ b/node_modules/pbkdf2/browser.js
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+var createHmac = require('create-hmac')
+var checkParameters = require('./precondition')
+
+exports.pbkdf2 = function (password, salt, iterations, keylen, digest, callback) {
+  if (typeof digest === 'function') {
+    callback = digest
+    digest = undefined
+  }
+
+  checkParameters(iterations, keylen)
+  if (typeof callback !== 'function') throw new Error('No callback provided to pbkdf2')
+
+  setTimeout(function () {
+    callback(null, exports.pbkdf2Sync(password, salt, iterations, keylen, digest))
+  })
+}
+
+var defaultEncoding
+if (process.browser) {
+  defaultEncoding = 'utf-8'
+} else {
+  var pVersionMajor = parseInt(process.version.split('.')[0].slice(1), 10)
+
+  defaultEncoding = pVersionMajor >= 6 ? 'utf-8' : 'binary'
+}
+
+exports.pbkdf2Sync = function (password, salt, iterations, keylen, digest) {
+  if (!Buffer.isBuffer(password)) password = new Buffer(password, defaultEncoding)
+  if (!Buffer.isBuffer(salt)) salt = new Buffer(salt, defaultEncoding)
+
+  checkParameters(iterations, keylen)
+
+  digest = digest || 'sha1'
+
+  var hLen
+  var l = 1
+  var DK = new Buffer(keylen)
+  var block1 = new Buffer(salt.length + 4)
+  salt.copy(block1, 0, 0, salt.length)
+
+  var r
+  var T
+
+  for (var i = 1; i <= l; i++) {
+    block1.writeUInt32BE(i, salt.length)
+    var U = createHmac(digest, password).update(block1).digest()
+
+    if (!hLen) {
+      hLen = U.length
+      T = new Buffer(hLen)
+      l = Math.ceil(keylen / hLen)
+      r = keylen - (l - 1) * hLen
+    }
+
+    U.copy(T, 0, 0, hLen)
+
+    for (var j = 1; j < iterations; j++) {
+      U = createHmac(digest, password).update(U).digest()
+      for (var k = 0; k < hLen; k++) T[k] ^= U[k]
+    }
+
+    var destPos = (i - 1) * hLen
+    var len = (i === l ? r : hLen)
+    T.copy(DK, destPos, 0, len)
+  }
+
+  return DK
+}
diff --git a/node_modules/pbkdf2/index.js b/node_modules/pbkdf2/index.js
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index 000000000..2dc6c39fb
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+++ b/node_modules/pbkdf2/index.js
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+var crypto = require('crypto')
+if (crypto.pbkdf2Sync.toString().indexOf('keylen, digest') === -1) {
+  throw new Error('Unsupported crypto version')
+}
+
+exports.pbkdf2Sync = crypto.pbkdf2Sync
+exports.pbkdf2 = crypto.pbkdf2
diff --git a/node_modules/pbkdf2/package.json b/node_modules/pbkdf2/package.json
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+++ b/node_modules/pbkdf2/package.json
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+{
+  "name": "pbkdf2",
+  "version": "3.0.9",
+  "description": "This library provides the functionality of PBKDF2 with the ability to use any supported hashing algorithm returned from crypto.getHashes()",
+  "keywords": [
+    "pbkdf2",
+    "kdf",
+    "salt",
+    "hash"
+  ],
+  "homepage": "https://github.com/crypto-browserify/pbkdf2",
+  "bugs": {
+    "url": "https://github.com/crypto-browserify/pbkdf2/issues"
+  },
+  "license": "MIT",
+  "author": "Daniel Cousens",
+  "browser": "browser.js",
+  "files": [
+    "browser.js",
+    "index.js",
+    "node-shim-async.js",
+    "node-shim.js",
+    "precondition.js"
+  ],
+  "main": "index.js",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/crypto-browserify/pbkdf2.git"
+  },
+  "scripts": {
+    "prepublish": "npm run test",
+    "coverage": "nyc --check-coverage --branches 90 --functions 100 tape test/*.js",
+    "lint": "standard",
+    "test": "npm run lint && npm run unit",
+    "bundle-test": "browserify test/index.js > test/bundle.js",
+    "unit": "tape test/*.js"
+  },
+  "devDependencies": {
+    "browserify": "*",
+    "nyc": "^6.4.0",
+    "standard": "*",
+    "tape": "^4.5.1"
+  },
+  "dependencies": {
+    "create-hmac": "^1.1.2"
+  },
+  "standard": {
+    "ignore": [
+      "test/bundle.js"
+    ]
+  },
+  "engines": {
+    "node": ">=0.12"
+  }
+}
diff --git a/node_modules/pbkdf2/precondition.js b/node_modules/pbkdf2/precondition.js
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+++ b/node_modules/pbkdf2/precondition.js
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+var MAX_ALLOC = Math.pow(2, 30) - 1 // default in iojs
+module.exports = function (iterations, keylen) {
+  if (typeof iterations !== 'number') {
+    throw new TypeError('Iterations not a number')
+  }
+
+  if (iterations < 0) {
+    throw new TypeError('Bad iterations')
+  }
+
+  if (typeof keylen !== 'number') {
+    throw new TypeError('Key length not a number')
+  }
+
+  if (keylen < 0 || keylen > MAX_ALLOC || keylen !== keylen) { /* eslint no-self-compare: 0 */
+    throw new TypeError('Bad key length')
+  }
+}