Merge pull request #12 from snorham/master

adding arrayadapter for our listings
I am starting the JSON stuff
I commited this already but here is round 2
we added the JSON call
Merge pull request #13 from elyselturner/ListViewFragment

List view fragment
Fixed some minor stuff
Declared keys, parsing through json tree
Traversed through the tree
Created new listing model object with json data
Populated listing model arraylist with listing model objects
Completed json parsing
Merge pull request #14 from aditishetty/DetailViewFragment

Detail view fragment