diff --git a/node_modules/once/LICENSE b/node_modules/once/LICENSE
new file mode 100644
index 0000000..19129e3
--- /dev/null
+++ b/node_modules/once/LICENSE
@@ -0,0 +1,15 @@
+The ISC License
+
+Copyright (c) Isaac Z. Schlueter and Contributors
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted, provided that the above
+copyright notice and this permission notice appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
diff --git a/node_modules/once/README.md b/node_modules/once/README.md
new file mode 100644
index 0000000..1f1ffca
--- /dev/null
+++ b/node_modules/once/README.md
@@ -0,0 +1,79 @@
+# once
+
+Only call a function once.
+
+## usage
+
+```javascript
+var once = require('once')
+
+function load (file, cb) {
+  cb = once(cb)
+  loader.load('file')
+  loader.once('load', cb)
+  loader.once('error', cb)
+}
+```
+
+Or add to the Function.prototype in a responsible way:
+
+```javascript
+// only has to be done once
+require('once').proto()
+
+function load (file, cb) {
+  cb = cb.once()
+  loader.load('file')
+  loader.once('load', cb)
+  loader.once('error', cb)
+}
+```
+
+Ironically, the prototype feature makes this module twice as
+complicated as necessary.
+
+To check whether you function has been called, use `fn.called`. Once the
+function is called for the first time the return value of the original
+function is saved in `fn.value` and subsequent calls will continue to
+return this value.
+
+```javascript
+var once = require('once')
+
+function load (cb) {
+  cb = once(cb)
+  var stream = createStream()
+  stream.once('data', cb)
+  stream.once('end', function () {
+    if (!cb.called) cb(new Error('not found'))
+  })
+}
+```
+
+## `once.strict(func)`
+
+Throw an error if the function is called twice.
+
+Some functions are expected to be called only once. Using `once` for them would
+potentially hide logical errors.
+
+In the example below, the `greet` function has to call the callback only once:
+
+```javascript
+function greet (name, cb) {
+  // return is missing from the if statement
+  // when no name is passed, the callback is called twice
+  if (!name) cb('Hello anonymous')
+  cb('Hello ' + name)
+}
+
+function log (msg) {
+  console.log(msg)
+}
+
+// this will print 'Hello anonymous' but the logical error will be missed
+greet(null, once(msg))
+
+// once.strict will print 'Hello anonymous' and throw an error when the callback will be called the second time
+greet(null, once.strict(msg))
+```
diff --git a/node_modules/once/once.js b/node_modules/once/once.js
new file mode 100644
index 0000000..2354067
--- /dev/null
+++ b/node_modules/once/once.js
@@ -0,0 +1,42 @@
+var wrappy = require('wrappy')
+module.exports = wrappy(once)
+module.exports.strict = wrappy(onceStrict)
+
+once.proto = once(function () {
+  Object.defineProperty(Function.prototype, 'once', {
+    value: function () {
+      return once(this)
+    },
+    configurable: true
+  })
+
+  Object.defineProperty(Function.prototype, 'onceStrict', {
+    value: function () {
+      return onceStrict(this)
+    },
+    configurable: true
+  })
+})
+
+function once (fn) {
+  var f = function () {
+    if (f.called) return f.value
+    f.called = true
+    return f.value = fn.apply(this, arguments)
+  }
+  f.called = false
+  return f
+}
+
+function onceStrict (fn) {
+  var f = function () {
+    if (f.called)
+      throw new Error(f.onceError)
+    f.called = true
+    return f.value = fn.apply(this, arguments)
+  }
+  var name = fn.name || 'Function wrapped with `once`'
+  f.onceError = name + " shouldn't be called more than once"
+  f.called = false
+  return f
+}
diff --git a/node_modules/once/package.json b/node_modules/once/package.json
new file mode 100644
index 0000000..d7ddf1e
--- /dev/null
+++ b/node_modules/once/package.json
@@ -0,0 +1,72 @@
+{
+  "_from": "once@^1.3.0",
+  "_id": "once@1.4.0",
+  "_inBundle": false,
+  "_integrity": "sha1-WDsap3WWHUsROsF9nFC6753Xa9E=",
+  "_location": "/once",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "once@^1.3.0",
+    "name": "once",
+    "escapedName": "once",
+    "rawSpec": "^1.3.0",
+    "saveSpec": null,
+    "fetchSpec": "^1.3.0"
+  },
+  "_requiredBy": [
+    "/end-of-stream",
+    "/findup-sync/glob",
+    "/glob",
+    "/inflight",
+    "/now-and-later",
+    "/pump",
+    "/pumpify/pump"
+  ],
+  "_resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
+  "_shasum": "583b1aa775961d4b113ac17d9c50baef9dd76bd1",
+  "_spec": "once@^1.3.0",
+  "_where": "C:\\Users\\marcr\\Desktop\\KorAp\\Git\\Kalamar\\node_modules\\findup-sync\\node_modules\\glob",
+  "author": {
+    "name": "Isaac Z. Schlueter",
+    "email": "i@izs.me",
+    "url": "http://blog.izs.me/"
+  },
+  "bugs": {
+    "url": "https://github.com/isaacs/once/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "wrappy": "1"
+  },
+  "deprecated": false,
+  "description": "Run a function exactly one time",
+  "devDependencies": {
+    "tap": "^7.0.1"
+  },
+  "directories": {
+    "test": "test"
+  },
+  "files": [
+    "once.js"
+  ],
+  "homepage": "https://github.com/isaacs/once#readme",
+  "keywords": [
+    "once",
+    "function",
+    "one",
+    "single"
+  ],
+  "license": "ISC",
+  "main": "once.js",
+  "name": "once",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/isaacs/once.git"
+  },
+  "scripts": {
+    "test": "tap test/*.js"
+  },
+  "version": "1.4.0"
+}