[Bug fix] settings links on plugin page didn't work, thanks [sndu for reporting](http://wordpress.org/support/topic/500-server-error-on-settings-icons-not-displaying)
Merge pull request #4 from jrfnl/master

[Bug fix] settings links on plugin page didn't work, thanks [sndu for reporting](http://wordpress.org/support/topic/500-server-error-on-settings-icons-not-displaying)