updated Gemfile.lock to use version 3.2.0
stubbed expectations for XSemVer::Runner
failing specs for runner 'init' and 'initialize' commands
passing spec for runnier 'init' and 'initialize' commands
passing spec for runner 'inc' and 'increment' commands
passing spec for runner 'spe' and 'special' commands
all specs pass for XSemVer::Runner commands
used aliases for abbreviated commands
help command for semver runner
moved 'require semver' from spec to runner.rb
runner displays error message on invalid command
better comments and whitespace
updated bin/semver executable to use XSemVer::Runner class