add SafeSpot to test gmap and gps
add server to test the datastore of google app engine and s3
achieving fetching safety score from server
update readme
add collectdata
modify to make geocode normal
update src to sleep a while after get a geo
add final crime data
update serve/client
update gps listerner
add search and saveinstance
make search done in mainactivity ~_~
add pubnub to pub/sub nearby warn & add markers for recent nearby crimes
Add data mining and visualization codes.
add spotReviewActivity
add comment list
make list work
make list work with server
add webview
some refactor