add support for curly brackets with the --pattern option, fixes #868
Merge pull request #869 from rkh/curly-pattern

add support for curly brackets with the --pattern option, fixes #868
Changelog for #869.

[ci skip]
Moves where load path setup and requires happen

* Fixes --require commandline option regression from #831
* Add cucumber documentation for --require
Add changelog entry for --require regression