Made sure it works with monodevelop 3.1.1
Update README to reflect required version of MonoDevelop
Merge fix from @alexfalkowski into monodevelop-3.1
Perform a nil check on 'content' before parsing
Restore docString for parse method overload in Parser

I don't think it's obvious that this method is only for generating
folds and does not generate an AST.  I have restored the doc string
and tried to make its purpose clearer.
Merge branch 'master' into monodevelop-3.1
Merge branch 'master' into monodevelop-3.1
Add support for MonoDevelop 4.0

Only tested on Ubuntu 12.10 and only with a source build of mono/gtk-sharp/monodevelop
Update Requirements in README.md
Add support for Xamarin Studio

Closes issue #28
Specify correct minimum required version of Xamarin Studio
Change verbage from Windows 7 to just Windows

The addin works on Windows 8 (and even XP) so we shouldn't refer
to Windows as Windows 7
Merge branch 'monodevelop-4.0'