Fixes #270 - return mergeTrees from brocfile
Merge pull request #271 from andrewcohen/master

Fixes #270 - return mergeTrees from brocfile
bump version of package.json
bump v0.0.22 :tada:
Restructure README heading levels
Merge pull request #272 from HeroicEric/rearrange-readme

Restructure README heading levels
lazily require npm + bower which speeds up startup time 3x

1.4s -> 0.4s
only denodeify once.
Merge pull request #273 from stefanpenner/speed-up-boot

Speed up boot