Implements SLKeyboard protocol for custom keyboards, updates text fields and views
Adds missing SLTextView and SLTextField documentation for -setText:withKeyboard:
Merge pull request #105 from j-mutter/feature/keyboards

Implements SLKeyboard protocol for custom keyboards
Merge remote-tracking branch 'upstream/master' into HEAD

Conflicts:
	Subliminal.xcodeproj/project.pbxproj