Started reference resolving
Merge pull request #1 from rsmenon/master

Project directory & file structure for Mathematica applications
Started a highlighting annotator
Merge branch 'ReferenceResolve'

Conflicts:
	resources/META-INF/plugin.xml
Changed package name to IDEA standart
New plugin version
Add new placeholder file type icons
Associate icons with filetypes
fix typo which made code invalid
changed _. tagging to DEFAULT instead of OPTIONAL