updated initialize.
added code style.
added docs.
added doc: easing & clockhand.
added doc: image.
updated ir()
updated doc: added typography.
updated doc: unit.
fixed typo.
updated doc: shape.
updated doc: animate.
fixed type.
rename doc => docs.
updated docs: breakpoint.
updated breakpoint case.
reformat doc.
updated docs.
release 0.3.1
Merge branch 'release/0.3.1'
Merge branch 'master' of github.com:ecomfe/rider