Adds docco rename and renames libary index.

:sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles::sparkles:
# Pull request relating to issue [#8](https://github.com/scandio/scandiojs/issues/8).

## Includes the following

- Updates `Gruntfile.js` to use `grunt-docco` instead of `grunt-docco2`
  - `grunt-docco` was poorly maintained in the past but was updated recently
- Renames `js/index.js` to `js/intro.js`
  - Also reflected in `Gruntfile.js` and it's file concatination array
- Refines docco-task to exclude `intro.js` as it is included in the main `scandio-xxx.js` which becomes `index.html`
- Clean's the `docs/` before building docs to remove old `scandio-xxx.html` overhead
- Adds `grunt-contrib-rename` task to rename `docs/scandio-xxx.html` to `docs/index.html`

It is all ready to be merged into `master` and `version/*` branches just **don't forget to run `$ npm install`** as some packages have been updated!

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