Use option role to format command line arg docs (fixes #236)
pull #272 fixes #236: Generation of Command-line option description.
Merge branch 'command-line-args-format' of https://github.com/helenst/behave into helenst-command-line-args-format
Merged #272, fixes #236 (provided by: helenst)
Merge branch 'helenst-command-line-args-format'
Merge branch 'master' of https://github.com/behave/behave