Pre-Alpha release 0.0.4

Testing features:

• render() feature added (run_script/env_render.py) to octpus_flat environment.
  • Used pyglet (OpenGL) to add graphical interface, and used vapory (POVRay) for quick 3D rendering.
• Modify the body-to-arm ratio for the octopus build.
• Include default.inc file as a background for rendering. Need to check if the file is correctly installed within the pypi package.