Improves in header-shrink demo

adjust custom css
Strip js comments

and put jshint undef: false inline
Rm scss/image-caption

for keep clean :ok_hand:
Update _scaffold.scss

add flex box properties
Put image-caption.scss in transition/

instead of component/ path
Clean css/component files

strip header comments
Add transitoon/image-caption.css
Update demo/header-shrink

keep color patterns :ok_hand:
Update Gruntfile.js

improve sass task, add sass:transition and refactor
Improve demo/image-caption

add new image in data/ and put name of examples