Add Marvin, the Paranoid Android

http://en.wikipedia.org/wiki/Marvin_the_Paranoid_Android
Add dogecoin icon
Replace non-transparent gif with transparent png
Resize marvin.png from 32x32 to 30x30
Merge pull request #8 from welltok/marvin

Add Marvin, the Paranoid Android
Merge pull request #9 from welltok/dogecoin

Add dogecoin icon
Preview resizes better than ezgif.com/resize
denver
fix publicenemy
Now with 100% more demon horse.
Merge pull request #6 from welltok/denver

denver
Slightly better Public Enemy logo.