Update rspec version and run transpec, to switch to RSpec 3.x syntax
Merge pull request #101 from petergoldstein/feature/transpec

Update rspec version and run transpec, to switch to RSpec 3.x syntax
Update the README to include discussion of the One-time Code Flow
Merge pull request #102 from petergoldstein/feature/add_hybrid_to_readme

Update the README to include discussion of the One-time Code Flow
Update README.md