Added setting to turn syntax highlighting for user types on or off.  Also changed to lazily apply syntax highlighting once omnisharp autoloads and also apply to all new buffers after that.
Changed type highlighting to require a function call
Fixed to return to the start buffer when enabling user type highlighting
Fixed to return to original buffer and also highlight it properly.
Merge pull request #85 from svermeulen/TypeHighlighting

Fixes to synax highlighting to apply to all buffers and enable it automatically on autoload