v0.3.1

Primary fix

Address scenario where document has no script elements - fixes compatibility with Jest/jsdom and other atypical script injection scenarios

Full changelog

0.3.0...master

for npm.

Merge pull request #67 from paulirish/66

0.3.0 & package name, for npm

0.2.0 - The big rewrite

@knightdr produced a version new version of matchMedia that performs better by using addEventListener('resize', …) rather than setTimeout.