Work in shapes
Implementation for shape renderers More info about shapes: https://github.com/e-ucm/ead/wiki/Renderers#shapes The class ShapesFactory generates pixmaps (images) for any type of shape. It can be handy for other purposes.
Removed unused (and unnecessary) alpha in renderers

Added some documentation
Added a test for ShapesFactory
Added test for invalid paints
Merge pull request #8 from anserran/shapes

Implementation of Shape Renderer
Nice job Angel
Updated i18n - now with full tests