Adding support for generating font files with opentype ligatures.
Added support for generating font files, stylesheets and demos using opentype ligatures.
Merge branch 'master' of ssh://gh/prehnRA/grunt-webfont
Changing help string for --ligature option and cleaning up code style.
Merge branch 'master' of github.com:prehnRA/grunt-webfont into prehnRA-master

Conflicts:
	tasks/webfont.js