BREAKING CHANGE: since all the code in the ngMobile module is touch related,
we are renaming the module to ngTouch.
To migrate, please replace all references to "ngMobile" with "ngTouch" and
"angular-mobile.js" to "angular-touch.js".
Closes#3526
Similar to ngMobile clicks, these events were not capturable by other
directives. Now they emit 'swipeleft' and 'swiperight' events that can
be follow with element.on('swipeleft', ...).
These directives fire an event handler on a touch-and-drag or
click-and-drag to the left or right. Includes unit tests and docs
update. Manually tested on Chrome 26, IE8, Android Chrome and iOS
Safari.
