Merge branch 'gabrielfalcao'
compiling some regexes once and reusing later
adding a CONTRIBUTING file because github is awesome! https://github.com/blog/1184-contributing-guidelines
Fixed parse_args() call to use the args if passed in.
Merge pull request #291 from skoczen/master

Fixed parse_args call
not requiring lxml 3 alpha anymore
starting to implement background
first step on parsing backgrounds appropriately
basic background functionality
parsing backgrounds without MMF
refactoring background parsing
implementing basic output of backgrounds
re-enabling 2 commented tests
implementing the colored output of backgrounds
releasing 0.2.10, support to backgrounds, closes #269
fixing tests
Merge remote-tracking branch 'gabrielfalcao/master'
Add path of file being imported in case of import error when loading step definitions - fixes #299
Merge pull request #299 from akaihola/299-import-exception

Exception in case of an import problem is not helpful
Set 'cause' iff the failure object has the value.