Merge pull request #20 from nelsonriley/bug/localasync

(bug) Async bug with local storage on phone fixed
(doc) add comments describing pedometer data retrieval
Merge pull request #21 from andrewzey/doc/firebase-motion

(doc) add comments describing pedometer data retrieval
(refactor) exclude 'platforms' from VCS
Merge pull request #22 from andrewzey/refactor/git-ignore

(refactor) exclude 'platforms' from VCS
(feat) Add status history view for weekly pedometer graphs