Android stock browser check

This is a class-static function of Phaser.Device to check wether we’re
running on an Android Stock browser. Autors might want to scale down on
effects and switch to the CANVAS rendering method on those devices.
Usage: var defaultRenderingMode = Phaser.Device.isAndroidStockBrowser()
? Phaser.CANVAS : Phaser.AUTO;
Added position Point object for quick x/y coordinates access.
Plus validation of non-point objects
"Reuse a single Point object rather than creating a new one each time"
Initial Rope Commit
added: Rope debug, segments, updateAnimation
fixed: replaced 'snake' with key
add README.md index
Removed the notion of Sprite Sheets vs single frame images

Instead of making a distinction between single frame images and Sprite
Sheets, I added a simple FrameData with one Frame to every image that
gets loaded. This way, a lot of the engine code can be simplified.

For instance, you can play animations on any Sprite without having to
check the “frame count” of its image anymore.

The engine doesn’t have to check for non-existing .frameData anymore.

An animation can keep on playing when an image happens to be set with 1
frame, continuing its animation when after that, another image is set
with multiple frames.

Think of it this way: an image with one frame is an animation of just
one frame.
Removed some more checks
group swap fix
Merge pull request #1057 from steelywing/patch-2

add README.md index
Merge pull request #1090 from Blank101/swapfix

Group.swap() fix
Merge pull request #1091 from photonstorm/alvin/dev

Fixed #1078 chromeOS no belongs to desktops
TypeScript definition updates to help fix for the `noimplicitany` option (thanks @Waog #1088)
Method documentation was missing parameters.
Merge pull request #1099 from kay-is/master

Method documentation was missing parameters.
Device detection of Apache Cordova

Simple check if "window.cordova" is defined for device detection of Phaser running (most likely) under Apache Cordova.
Merge pull request #1102 from videlais/patch-1

Device detection of Apache Cordova
World Wrap and P2

Changes only to documentation for clarity.