Allow a custom container class to be specified and an input width to be provided as a function.  Also improved ngdocs.
Merge remote-tracking branch 'origin/master'

Conflicts:
	dist/apInputControl.js
	dist/apInputControl.min.js
	src/apInputGroupDirective.js
	src/apInputRowDirective.js
Allow a custom container class to be specified and an input width to be provided as a function.  Also improved ngdocs.