Merge branch 'release/v0.3.0' into develop

* release/v0.3.0:
  Bumped version number and updated some docs.
Added the first set of unit tests
Bumped version number and generated new minified version
Merge branch 'release/v0.4.0'

* release/v0.4.0:
  Bumped version number and generated new minified version
  Added the first set of unit tests
Merge branch 'master' of https://github.com/boye/PAPI

* 'master' of https://github.com/boye/PAPI:
  Update README.md