Added Coordinate Collection object
Added Polygon object
Added maximum and minimum coodinates
Added setter and getter
Added point on vertex method
Added point on boundary method
Added point in polygon method
Added support for PHP 5.3 for JsonSerializable
Fixed issue with minimum and maximum coordinates
Fixed array key type bug
Removed unused variable
Fixed PhpDoc bug
Added precision system and converted to bccomp
Added name to credits
Added bounding box object
Updated polygon object to use bounding box
Switch bounding box to four coordinates instead of two corners
Fixed issue when creating bounding box with null
Removed unfinished block from readme
Merge pull request #44 from gabrielbull/feature/polygon

Added polygon object