Merge pull request #1 from thetristan/master

Remove external dependency on afterEach, mix bond api into returned spy object, test coverage for changes
simplified restore
Merge pull request #2 from EndangeredMassa/simpler_restore

simplified restore
Update README.md
fixed `after` method detection
published
Update README.md
Update README.md
Improve on anonymous spy behavior by returning spy that returns the first argument if bond is invoked with a single argument