working on changing default behavior

adding functionality to make the observation return work. Created the 2d
mock observation array
added observation stuff

Added Jorrit's REST service stuff for observations. Need to change
default method calls to observations stuff. And write phpUnit tests for
new code updates.
Change Default behavior to return observations

The default post will not return a JSON object that contains
observations, as opposed to the previous list style. As of now only
findPredforPredatorObseravation is implemented. Meaning that if the user
wants all of the prey observations of a particular predator it will
work. The inverse of that will not. You cannot filter by a specific prey
type yet. Also added all the test for this. Both Mock and REST should be
working
fix Typo on last message

See last explanation, except first sentence should now read: The Default
behavior will "now"...