Merge pull request #1 from papandreou/master

Fixed spelling
Added browser support with and without require.js
Improved package.json
Updated README.md to include browser support
Release 0.1.0
Update link to raw histogram.min.js
Return on error
Released 0.1.1
Improved README
Specified node-canvas version 0.12.1. 0.13.0 breaks installations. Fixes #2
Release 0.1.2
:gem: Added travis.yml file :gem:
:gem: Travis CI image/link in readme :gem:
Merge pull request #3 from travis4all/clean
update node-canvas dep
Merge pull request #4 from visionmedia/patch-1

update node-canvas to ~0.13.1
Release 0.1.3
Stay on uglify-js 1.x.y. UglifyJS 2 changed its switches so the posttest script throws an error, and 1.3.4 minifies the library better.
package.json: Remove the pretest script. Causes an infinite loop with npm 1.2.0+.
Update canvas to ~1.0.1 (works with node.js 0.10).