Merge branch 'staging'

Merge branch 'staging'

Merge branch 'staging'

feat( core ): Size and Alignment - Checkbox and radio button sizes ar…

…e calculated from parent font size. Aligned to baseline of the application's font. (lokesh-coder#19)

BREAKING CHANGE: The complete API has been changed, and this version does not compatible with v2.x

refactor( core ): Complete rewritten of the library
feat( animation ): Pulse
feat( state ): Introducing state, to work with different checkbox states
feat( scale ): Added support to make checkbox bigger
feat( SVG ): Added support for svg elements,files and sprites
feat( Image ): Added support for tiny images
feat( Switch ): New iOS style switches with 3 variants
fix( core ): z-index is calculated from 0 to 2 [ lokesh-coder#6 , lokesh-coder#14  ]
feat( lock ): Similar to disable but looks like active [ lokesh-coder#17  ]
build( CI ): Setup Travis for auto publish from staging to master 
doc( readme ): Updated with examples, badges, gif preview and a logo
doc( readme ): Removed bower installation guide
doc( readme ): Changed CDN provider from cdnjs to jsDelivr
refactor( core ): All class names starts with prefix `p-` except *pretty*and *state*

minor bug fixes and changed sass variables

Bug Fix: Remove junk character in print media

Minor bug fixes

animation fix