Run test against latest Ruby 2.1 on Travis CI

see: https://twitter.com/travisci/status/513233940442644480
Run test against Ruby 2.2 on Travis CI
Use yajl since it is already a dependency

Both JSON and Yajl were listed as dependencies. Pygments.rb already requires yajl, so let's just use that instead of using both.
Add build.xml.dist to XML filenames
Janky CI
+x
Update cibuild
Update cibuild
Update cibuild
Update cibuild
Update cibuild
Update cibuild
Vendored gems
Merge branch 'master' of github.com:github/linguist
CI config
Add .command as a Shell file extension
Merge pull request #1622 from pchaigno/shell-extensions

Add .command as a Shell file extension
CI step for samples
Merge branch 'master' of github.com:github/linguist
Assign a bunch more TextMate scopes