[#233] added the possibility to specify different axis value for ratio

The feature is backward compatible with the previous implementation, but
now allows to specify a json expression like `json:{"x":0.5,"y":1.0}` if
a different value is required for x or y axis
[#234] added a `setMaxSize` function to limit the display canvas size when scaling
[#234] set default max size if corresponding CSS property are defined
Updated Contributors list
Fix `me.input.bindMouse` and `me.input.bindTouch`
Updated changelog
Fixe me.state.pause() when using requestAnimationFrame (thanks Killian)
[#238] fixed missing documentation for extended built-in objects
Updated the jsdoc3 processor to the last final 3.2.0 release
[#238] added link to external documentation for built-in objects

now working thanks to the previous jsdoc3 update ;)
Attempt at better documenting the "custom" extended Event Object
[#194] fixed accelerometer event registration when available
[#227] added a bower.json file
first attempt at #159
fix some naming + dupe update loop

it could use finalization
no need to split update loop?
fix a few goofed comments
split game loop for #159

Per comments from #170
Merge pull request #242 from swmuron/ticket-159

Ticket #159 : better implementation of the pause/resume function (by swmuron)
[#159] fixed some minor issues