Merge pull request #78 from kickbutts/master

Update 2014-05-16-binaergewitter-talk-number-94-ascii-ist-genug-fuer-all...
Update Ruby to 2.1.2
Update ruby also in the Gemfile
Update gems, add test for missing audio files.
Merge pull request #80 from Binaergewitter/podcast_file_available_test

Update gems, add test for missing audio files.
Update 2014-05-16-binaergewitter-talk-number-94-ascii-ist-genug-fuer-alle.markdown
post cleanup & links
Merge pull request #82 from fliiiix/patch-42

post cleanup & links
Update 2014-05-16-binaergewitter-talk-number-94-ascii-ist-genug-fuer-alle.markdown
mal testen ob der test geht mit den 404 audio urls
Update 2014-05-22-binaergewitter-talk-number-95-20-cm-zu-breit.markdown
Update 2014-05-22-binaergewitter-talk-number-95-20-cm-zu-breit.markdown
update url
Add rerun gem
bgt096
Update 2014-06-06-binaergewitter-talk-number-96-zero-day-aus-der-zukunft.markdown
Update 2014-06-06-binaergewitter-talk-number-96-zero-day-aus-der-zukunft.markdown
post cleanup
Merge pull request #83 from fliiiix/patch-43

post cleanup
Update Gems