Release Process

For my own memory and to help other collaborators, here is what happens for each release:

1. Bump the version in Down.podspec, following semver guidelines.
2. Push that commit to master branch or to your PR branch
3. Push a new tag with that version #
   • e.g. git tag -a v0.5.1 -m "v0.5.1" && git push origin --tags
4. Push the podspec up to CocoaPods
   • e.g. pod trunk push
5. Run the github_changelog_generator
   • e.g. github_changelog_generator -u johnxnguyen -p Down
6. Commit the CHANGELOG.md file changes