add directives and functions for angular 1.3.0
add html grammar from atom/language-html #13

refer from
<https://github.com/atom/language-html/blob/c5348f1fe95b938552e1619e58b0d54d67211f46/grammars/html.cson>
add grammar for directives as attributes #13

The directives refer AngularJS v1.3.8.
styling angular directives in HTML #13
add grammar for directives as element #13

The directives refer AngularJS v1.3.8.
fix grammar for capitalized directives

close #13