fix for settings.DEBUG being reset when test flag is used
using markment for docs
using steadymark for doctests
Find step definitions when running features from a subdirectory by @koterpillar closes #343
Merge pull request #342 from hexsprite/test-settings-debug

fix for settings.DEBUG being reset when test flag is used
bug fix by @davidsulc: tags shouldn't be parsed as steps when using backgrounds. closes #336