Provide fallback `cb` when none given.
Merge pull request #4 from djanowski/fallback-cb

Provide fallback `cb` when none given.
fix provide fallback callback
limit which browsers to test in zuul

faster testing
make "npm test" work
remove old component field for package.json
v0.0.5
Fix syntax error in README.
Merge pull request #6 from djanowski/fix-syntax-error-in-readme

Fix syntax error in README.
Automatically rewritten for npm.