Some language fixes.
libxslt-dev seems to exist neither in Ubuntu nor in Debian GNU/Linux, but libxslt1-dev does.
Use Bundler's deployment mode so uberzeit can be installed by non-root users and doesn't pollute the global gem space.
Make sure the target machine has RubyGems available (the version from the repo is for Ruby 1.8 only)
Mention this works on Debian as well.
An explanation why we don't use the packaged RubyGems.
.env seems to be in the project root, not in config/
Use the correct plural possessive form.
Fixing 'zu Gute' -> 'zugute'
Add missing hyphen.
Make sure Travis CI has an X server so it can run Firefox.
Fix spec command
Merge branch 'master' of github.com:psy-q/uberzeit into psy-q-master
Merge branch 'psy-q-master'