#20 Added remove() method to Gists

Added remove(String name) method to Gists to delete a gist by name, plus
unit and integration testing.
#20 fixed code style

fixed code style.
#20 fixes
from master
fixed merge conflicts
#20 fixes
Merge branch 'master' into 20
Merge branch 'master' into 20
#20 Solved RtGistsITCase
# 20 merged with master and changed RtGistsITCase
#20 soled merge conflicts
Merge branch 'master' into 20
Merge branch 'master' into 20
#20 test fixes
#20 removed unnecessary puzzle
Merge pull request #126 from amihaiemil/20

#126: pull request #20 Added remove() method to Gists
#20 fixes