Consistent quoting for exports
Merge pull request #254 from opscode/jdmundrawala/shell-quotes

Consistent quoting for exports
Use File::PATH_SEPARATOR for GEM_PATH
Merge pull request #257 from opscode/jdmundrawala/gem-path-sep

Use File::PATH_SEPARATOR for GEM_PATH
Pass version to command when execing
Pass -h/--help in chef exec
Added spec for version and help in exec