Edited Rot_blade_final_2.xcf for issue #369:

 - Began the improvement of the texture for the rotating blade, barely
   nothing done.
Merge branch 'Grupo-A' of https://github.com/eloipuertas/ES2013Dimarts into Grupo-A
Edited rot_blade_final_3.xcf and created rot_blade_full_1.png for issue
#369:

 - The new texture is finished, waiting for aproval to import it to Unity.