Create download_list.py

Edited the download.py so the photo folder on the pi 'mirrors' what's on flickr.  It points to a set on flickr and checks if photos have been removed or added from the set.  If changes are found, then it will restart the fbi slideshow program on the pi.
Create pir_btn.py

Edited pir.py to include a push button input to run the download script.
Merge pull request #3 from corkyc/master

Tweaked some of your scripts