Removed matplotlib instances from shapes.py and light.py
Removed matplotlib related tests from test_shapes.py
Patched addObjects.js to work according to new data json
Added three ColorKeywords in a list, and check for the same
Removed instances of matplotlib from the source, except from the example
Removed matplotlib instances from .travis.yml and README.rst
Modified test to remove matplotlib related color strings
Removed matplotlib dependency from setup.py
Merge pull request #54 from pydy/remove-matplotlib

Remove matplotlib