Added DefaultWaypoints.js; this file is only for default waypoints
Modified PositionData.js to require in DefaultWaypoints.js
Modified app.js to load the default waypoints first
Added ui.defaultWaypoints property
Added a small work around for the runtime exception in geo.js
Removed tizen target
Removed deprecated property Ti.Geolocation.preferredProvider.
This property was for Android only any way.
Started to modulize parts of the geo.js logic into smaller functions and using them in app.js
Merge pull request #5 from wluu/master

Big PR