Merge pull request #2 from tdryer/master

Add dependencies and install instructions
Merge pull request #3 from tdryer/master

Add tests for purplex's lexer
Added an overridable `on_token` hook to Lexer
Merged in changes from my compilers project
Minor formatting fixes
Bump version to 0.1.1
setup.py now uses git tags for its version
Configure Travis CI support
Added travis, coveralls, and pypi badges to readme
Added pytest coverage and pep8 plugins
Added coveralls support
Fix pep8 errors
Merge pull request #4 from mtomwing/travis

Enable Travis CI and coveralls
Don't let coveralls fail the build, ever
Fixed coverage badge in readme
Don't have to expose coveralls service name and token
Configure travis to only test on Python 3.4
Only run coveralls if the travis build passes
Clean up the README a bit
Added TokenDef and Token tests