Remove xml:space="preserve" from SVGs

xml:space="preserve" is created by some vector editing programs for no
good reason. These logos do not have any whitespace only text node
descendants, so including this does nothing but increase file size.
Remove svg x and y attributes

The default is already 0.
Remove enable-background property from SVGs
Remove xlmns:xlink definition

xlink isn't used anywhere in the SVGs, therefore there's no need to
define the xlink namespace
Move svg opening tag to one line
Remove svg DOCTYPE declaration
Use consistent indentation
Use spaces instead of tabs
Fixes typos in README
Merge branch 'pedromaltez-pm/patch/optimise_svgs'
Adds a very simple, manual test
Adds support for installing through Bower
Updates README
Makes description consistent
v0.1.1

- Removes unnecessary SVG code #1, thanks @pedromaltez
- Code style fixes #1, thanks again @pedromaltez
- Adds very basic test
- Published to Bower
Replace CoffeeScript logo with official version
Update README wrt CoffeeScript logo

The logo is no longer a recreation, but the official logo as provided
by @jashkenas.
Add alternative versions of CoffeeScript logo

Color, knockout, no-whitespace, color-no-whitespace, and
knockout-no-whitespace versions are included in this commit.
Changes CoffeeScript filenames, removes groups
Updates README to use production links to the SVGs