Modifies gitignore to ignore the java class in which client_id and
client_secret for the instagram api are stored as static final values.
This prevents leaking them to the public! And will of course cause
compilation errors until a similar file is added.
Adds a json volley request
Adds internet permission
A request to test the service
Adds code to launch our test request on app startup
Adds models to deserialize an evnelope from the Instagram service