Added code for twitter

Added the agent twitter class to allow the imp to tweet. Ensure the
twitter keys are not in class before uploading
Media Upload to twitter added

Added a method that allows an image to be sent with a tweet. Need to
test new layout when the imp is connected. Last look gave an Http error
"55" so thats not good...
Twitter works now

Something was wrong with implementing the twitter API, it now sends it
to a php file to take the picture and also talks to the second imp to
drop the spider
Added scare imp code

Put code into folders seperating the imps used. Added code for agent and
device of the second imp used to power the scare
Merge pull request #1 from VanessaHenderson/master

completed camera and scare code