new theme
add two posts about angularJS.
add gemfile
Merge branch 'frontend' into gh-pages

Conflicts:
	_includes/themes/edward-style/default.html
	_posts/2013-09-11-angularjs-learning-note.md
	_posts/2013-09-11-angularjs-learning-note.md~
	assets/themes/edward-style/css/style.css