replace let instead of instances variables on before block

- reason for doing that: http://betterspecs.org/#let

'Using let the variable lazy loads only when it is used the first time
in the test and get cached until that specific test is finished.'
add fuubar for beautiful spec output

- reference: https://github.com/jeffkreeftmeijer/fuubar
add showtime info spec
showtime info refactor

- add holiday obs scenario
- refactor showtime info ftw
- add ruby debug gem to make sweet debugs
add cool badges

- gem version badge
- code climate badge