Update bower.json, package.json and .jshintrc

* I updated `bower.json`.
  * According to [the specification](https://github.com/bower/bower.json-spec#version), We don't have to set `version` field explicitly.
* I removed `globals` from `.jshintrc` and added `mocha` option instead.
  * See jshint/jshint#1597
* I added [`files`](https://www.npmjs.org/doc/files/package.json.html#files) field to `package.json`.
  * Same as jonschlinkert/is-absolute#1