Updates pygments
TOML is a custom lexer
Merge pull request #127 from alindeman/pygments-latest

Updates pygments
Cache lexers
Bump to 0.6.0
Prep repository for running tests on Travis-CI

This adds the .travis.yml configured to run the test suite against ruby
1.9.3, 2.0, and 2.1. It also adds a link to the build status badge to
the repo's README (references the non-existent path for tmm1/pygments.rb).
Now we just need to have the repo authorized by one of the maintainers.
Link build image to actual page on Travis-CI