Fix "invalid version" error on bower install

When attempting to install this via bower registry (`bower install normalize-less`) I was getting the following error:

`- normalize-less invalid version: 0.1`

I converted the version in `bower.json` to use [semantic versioning](http://semver.org/), bumped the patch version, and tagged as `v0.0.2` on my forked repo to fix.

To integrate the changes correctly so that it will able to be checked out via the bower registry you would need to:

1. Merge the changes into the `master` branch
2. Create a `v0.0.2` tag

Hoping this will help out anyone else trying to check out via the bower registry!

Thanks.