Repackaging for 2.1.4 release.
Cache.getRenderTexture will retrieve a RenderTexture that is stored in the Phaser Cache. This method replaces Cache.getTexture which is now deprecated.

Cache.autoResolveURL is a new boolean (default `false`) that automatically builds a cached map of all loaded assets vs. their absolute URLs, for use with Cache.getURL and Cache.checkURL. Note that in 2.1.3 and earlier this was enabled by default, but has since been moved behind this property which needs to be set to `true` *before* you load any assets to enable.

Cache._resolveUrl has been renamed to Cache._resolveURL internally and gained a new parameter. This method is a private internal one.

Cache.getUrl is deprecated. The same method is now available as Cache.getURL.

XML files weren't being added to the URL map.

Cache._resolveURL was causing a Sound double-load in Firefox and causing errors (thanks @domonyiv #1253)