Repository Cleanup & Optimisation

* Removed all .DS_Store files
* Added .DS_Store to gitignore
* Removed unnecessary whitespace from CSS
* Used Kraken.io to Losslessly Compress art assets. Saved a few Megs
* Adds a file called .editorconfig, which will allow for contributors to maintain coding styles with the [.editorconfig plugin](http://editorconfig.org/) for their favourite Text Editors.
Introduced, then fixed, a bug caused by a reckless uncorrected parameter change.
* Removed the Archive4.zip - which includes all the same contents as the repo.
* laid foundations for a Gruntfile to manage a build process and run local servers in the future (SoundJS expects to be able to XMLHttpRequest to get things, this won't work if you just open index.html on your system like a normal file in your browser)