Fixed the add_to_digg() method as per bug #30.
Fixed the add_to_digg() method as per bug #30.

wikidi/simplepie,blat/simplepie,simplepie/simplepie,skyzyx/simplepie,songfj/simplepie,barryvdh/simplepie,blat/simplepie,skyzyx/simplepie,ropik/simplepie,barryvdh/simplepie,ropik/simplepie,Alkarex/simplepie,FreshRSS/simplepie,wikidi/simplepie,blat/simplepie,songfj/simplepie,FreshRSS/simplepie,Alkarex/simplepie,mblaney/simplepie,Alexia/SimplePie,simplepie/simplepie,Alexia/SimplePie,wikidi/simplepie,barryvdh/simplepie,Alkarex/simplepie,mblaney/simplepie,gsnedders/complexpie,songfj/simplepie