fixed no-dot and wrong color features
Merge pull request #7 from gopher-snakes-2013/line_experiment

fixed no-dot and wrong color features
added comment model and test
passing unit and feature tests mother fucker
Added to spec_helper to destroy Comment and Drawing DB entries before running tests.
Merge pull request #8 from gopher-snakes-2013/comments_and_tests

Comments and tests
SweeT!
updated drawings routes to include comments on each drawing