change mode of file
test for chmod
no check for presence
added features to test change of file mode
add step to create a directory with mode
change mode
string supports a different to_i method
Removed unused variable
Merge pull request #167 from simsalabim/remove-unused-variable

Removed unused variable
Adding meaningfull message for invalid argument. Fixes #168
Merge remote-tracking branch 'maxmeyer/feature/file_mode'

Conflicts:
	lib/aruba/cucumber.rb
Merge remote-tracking branch 'origin/master' into feature/file_matcher

Conflicts:
	spec/aruba/api_spec.rb