Fix error where nil was trying to be compared to string. Add swp files to gitignore
Add support for Isolate (alternative to bundler)
Fix typo
Return 'n/a' when Gemfile doesn't version rails.
Change constant name to avoid re-naming warning.
Add changelog
Sort output naturally by rails version
Add Travis CI config
Update changelog
Tweak Travis config
Add rake as dev dependency
Add Travis status badge
Bump to v0.0.3
Update changelog for v0.0.3