fixed formating of README.md
Merge pull request #49 from banterCZ/patch-1

fixed formating of README.md
Merge pull request #48 from prmartinuk/master

Fixes #45 and #17
Creating ticket without assignee causes 500
z-index for tip is wrong (ends up behind the text)
Text in tip is aligned incorrectly
Merge pull request #61 from mickem/master

Pull request for my issue patches
Merge remote-tracking branch 'upstream/master'