Add Username to Top Panel Contributors

Here are the list of the people who makes or contributes to this project.

GitHub usernames are indicated in parentheses, or as sole entry when no other name is available.

Project Founder and Maintainer

William Brendaw (brendaw)

(in alphabetical order)

Cem Özden (cemozden)
Joshua Huber (Josholith)
Rúben Carneiro (rubencarneiro)
Samuel Kyletoft (SKyletoft)