Adding bower.json so that build scripts dependent on the main attribute still work.

[Duder-onomy]

Many people are using your bower listing to include this awesome library into their projects, however, the repo has no bower.json.

This means that people who count on it being there for build scripts cannot use it as a true bower style dependency.

Usually, when a person wants to make a repo on bower, they run bower init This creates the bower.json with reasonable defaults. It is something that users count on being there.

Addition of a bower.json, and in particular, the main attribute of the bower.json, ensures that people can use npm's like main bower files to compile their source code without configuring which file is the actual source file in the repo.

The only issues I can think of by adding this are:

1. You will need to bump the version number in the bower.json when you make a new release.
2. You might want to point the main attribute at the minified version instead.

If you accept this pull request you will also need to make a version bump. A patch bump will be sufficient.

[plentz]

related #105 :)

[plentz]

@Duder-onomy thanks a lot! you rock :)