added support for NSIS
Add keywords to C/C++ preprocessor mode
Zeroed relevance of `///` tags in C# comments (see #361).
Documented all current language aliases.
Merge pull request #361 from Sannis/improve_c_preprocessor_mode

Add keywords to C/C++ preprocessor mode
Merge branch 'master' of github.com:idleberg/highlight.js into nsis

Conflicts:
	src/test.html
Replaced beginWithKeywords with current syntax in NSIS.
Fixed NSIS releance:

- zeroed relevance of ;-comments
- using standard number mode
Reindented and fixed dangling commas in nsis.js.
Support old syntax with double quotes under #include in C++.
added NSIS classes
Merge pull request #362 from idleberg/master

added NSIS classes