Added license info to the readme filem and added the GPL

LICENSE

@@ -1,5 +1,40 @@
-Copyright (c) 2015, Justin Worthe
+Copyright 2017, Justin Worthe
 
-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.
+This library can be used free of charge under either the ISC license
+or the GNU GPL 3.0.
 
-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.
+
+ISC License (ISC)
+=================
+
+https://opensource.org/licenses/ISC
+
+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.
+
+
+GNU GPL 3.0
+===========
+
+http://www.gnu.org/licenses/gpl-3.0.html
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or (at
+your option) any later version.
+
+This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+General Public License for more details.

README.md

@@ -140,3 +140,13 @@ var isSouthAfricanCitizen = saIdParser.parseIsSouthAfricanCitizen(validIdNumber)
 
 //isSouthAfricanCitizen === true
 ```
+
+### License
+
+Copyright 2017, Justin Worthe
+
+This library can be used free of charge under either the ISC license
+or the GNU GPL 3.0.
+
+- [https://opensource.org/licenses/ISC](https://opensource.org/licenses/ISC)
+- [http://www.gnu.org/licenses/gpl-3.0.html](http://www.gnu.org/licenses/gpl-3.0.html)

package.json

@@ -19,7 +19,7 @@
     "type": "git",
     "url": "https://github.com/JWorthe/south-african-id-parser.git"
   },
-  "license": "ISC",
+  "license": "(ISC OR GPL-3.0)",
   "devDependencies": {
     "chai": "^4.0.2",
     "mocha": "^3.4.2",