use quadtree to filter markers in bounds of map on screen
working towards ui-scroll display feed inBounds
Merge branch 'dev' of https://github.com/gowaddle/waddle into dev
fix to reject promise with error if user not found
towards filtering feed by map bounds
refactor feed filtering to feed.js from map.js
Merge pull request #146 from atungare/dev

quadtree filtering of feed