#23 Delete master branch

Originally at 2015-01-21T14:54:42Z by Hannes Hirzel closed at 2015-02-22T02:11:32Z Suggestion by Bert Freudenberg on the ML. The branch used in this repository is the gh-pages branch. The master branch has not been updated for a long time. Having the master branch around is not necessary. ## Choose default branch  ## Delete master branch