Rephrased footer text slightly to be more general.
Included logo for PAPI.

Different colors are available (blue (default), black and multicolor), though blue is the default. And there is no proper way to switch between the schemes, yet. A small js code should switch from the svg version to the png one on error (for older browsers).
Merge pull request #6 from AndiH/master

Added "PAPI" logo.