Temporary screenshot fix.

Managed to get a local screenshot function to work in the swarm example, but when trying to add it to display.clj and run swarm example the debug window says to edit source path. When set to src and rerun the swarm example debug window still asks to edit source path. Screenshot shows what happens when the local screenshot function is commented out and swarm example is run with the same screenshot function in display.clj
![1_display_screenshot_uncommented](https://cloud.githubusercontent.com/assets/7042260/4211437/996cd6cc-3888-11e4-81b7-83816cb17dc0.png)
![2_swarm_screenshot_commented](https://cloud.githubusercontent.com/assets/7042260/4211435/9967e13a-3888-11e4-89bf-ca38776622d1.png)
![3_error_source_path_edit](https://cloud.githubusercontent.com/assets/7042260/4211436/9969b32a-3888-11e4-8d0b-899971019368.png)