Merge pull request #1055 from google/restructure

Restructure and update

Update README.md

Merge pull request #475 from google/generate-device-sprites

Adds device symbol sprites.

Merge pull request #459 from google/apache_license

License change to Apache 2.0.

Bumping to version 2.2.3 in an attempt to fix npm install.

npm install is failing with "npm ERR! cb() never called".
I'm trying again from scratch.

Updated icon font woff file.

It now mirrors what is served by Google Fonts.

Bumped minor version.

Merge pull request #304 from google/2.2.0

2.2.0 release: 41 new icons!

release v2.1.3

Revision bump