CSS rework, modal window, js utilities and wash screen

css:
- Refactored to 1 item per line for easier version control (change
highlighting).
- Now in alphabetical order (as they should be!).
- Refactored to better use SASS.
- Converted IE fallback on grid to a fixed width of 960. Now includes IE
8 (aswell as 7/6).
- Edited visuallHidden class to not use clipping, seems to have issues
in ie 6 / 7.

JavaScript:
- Created utilities functions.
- Added pageWash functions to utilities.
- Event `pageWashOff` triggered when the page wash is hidden.
- Escape key bound to hide wash when visible.
- Created DOM creation object in settings to remember when re-usable DOM
elements are created.

- Initial modal window created for showing/hiding windows and binding to
wash.
- Will load local/ajax content.
- Built in focus switching for accessibility.
- Built in close button.
- Multiple events triggered throughout process.

Files:
- Added examples directory for plugin development and demonstrations.
- Added fake files into ajax (in examples) for holding various data to
be used with plugin development/testing.