Update README.md
Update README.md
clean
no need ie & print
add some default variables
Update README.md
add transion
update flexbox "compass/css3/box module is DEPRECATED"
add bug fixes folder
Merge branch 'develop'

Conflicts:
	README.md
	imports/_animation.scss
	imports/_box-direction.scss
	imports/_box-flex.scss
	imports/_box-pack.scss
	imports/_keyframes.scss
	imports/_transition.scss
Merge branch 'master' into develop

Conflicts:
	README.md
	imports/_animation.scss
	imports/_box-direction.scss
	imports/_box-flex.scss
	imports/_box-pack.scss
	imports/_keyframes.scss
	imports/_transition.scss