Added gli development dependency.
Added all commands and subcommands stubs.
Added access to global options, options and arguments in subcommand blocks.
Added forge initialisation method.
Added version.
Forge init command working.
Added forge_list method.
Added forge_search method.
Added forge list and forge search commands.
Added forget_set method + forge set command handling.
Added version validation utility method.
Added argument validation options.
Fixed searching regexp for forge modules.
Added remove forge module support.
Fixed forge init argument.
Updated documentation.
Fixed documentation
Added gitlab-grit gem to gemspec