Merge pull request #16 from kilianc/master

skip non functions in resources
Update methods and koa-compose dependencies.
Improve app.resource() example.
Bump version to 2.0.1
Fixing typo: theads -> threads

Thanks for the library, great stuff
Merge pull request #17 from jeffling/patch-1

Fixing typo: theads -> threads
Merge branch 'master' of github.com:kilianc/koa-router
Simplify switch statement.
Bump version to 2.1.0 - closes #19
support OPTIONS
gracefully ignore unknown controller actions