session setting
add auto incremental Model, users route
modify card create flow.
dashboard view logic
ajax
css2sass
Add Compass & Susy
Add common images
changed background
ロゴを入れた
背景とトップのスタイルを整えた
Merge branch 'style' of https://github.com/shoota/instaxmascard into style

Conflicts:
	docs/css/style.css
	docs/js/instaxmascard.js