unicode characters in the step names do not cause xunit plugin to break
unicode characters in the step names do not cause xunit plugin to break
trying to utf-8 encode all possible unicode strings
xunit plugin does not throw exception when missing step definition
Merge branch 'master' of git://github.com/pshomov/lettuce into pshomov-master

Conflicts:
	lettuce/plugins/xunit_output.py

closes #305