Releasing new versions of Wraith

1. Increment the version:

lib/wraith/version.rb

2. Commit and push the new version to Git.

3. Tag the release, i.e.

git tag -a v3.1.0 -m "description"
git push --tags

4. Go to GitHub and fill out the release details properly.

5. Push the latest gem:

gem build wraith.gemspec 
gem push wraith-3.1.0.gem