modify feed reciver(json body instead of params)
verify updates from instagram
fetch photo info when notification arrives
create class photo
new feature of class photo
show photos received
use my local site to verify my code
Merge branch 'store_photo_info_in_memory_instead_of_database'
create a model(non_database) for storing data
use InMemoryDatabase to store photo infos
Merge branch 'improve_in_memory_store'