Initial Cardea (IntelliJ IDEA 13) support

The plugin now:
- compiles against 132.556 sources
- still highlights sources correctly
- still does the autocomplete correctly

This commit breaks compilation / running from IDEA directly.

There's also the 'binary' file for those who want to test it.
Credits, ofc
Changed lexer compiler script to check first if IDEA_HOME is set or not
GOlang 1.1.2 syntax support and changelog added
Changed minimum IDEA version to latest IDEA 13 EAP
Demo commit for tests
Get proper filepath
Locate the proper file
Merge pull request #254 from dlsniper/cardea

[WIP] Cardea (IDEA 13) + GOlang 1.1.2 support