Main work - Add <header>
Changes...
	1. index.html - added html code of page
	2. main.less - added style for <header>(.top-menu, .brand, .navbar)
	3. variables.less
	4. Gruntfile.js
Added ...
	images
	and other
Make slider controls
Make carousel (Added carousel-caption)
Added .new-articles --> .category-item
Added Featured hader
Added <aside> --> .futured
Maked main page (index.html)
Maked article page (photography.html)