Merge pull request #14 from naeemkhedarun/master

Patch for decimal heights (due to Tiled editor) and ability to load external tilesets.
Fixed bug in parsing object width and height. Modified unit tests to reflect new reality :)
Increased version number.
TileReader now can read CSV encoded layers.
Merge pull request #16 from enyim/master

TileReader now can read CSV encoded layers.
Fixed version number.
Add support for tiled supporting decimal object positions and update tests to reflect this.