Attempt to implement fix for leaflet locate() issue #5 using:
- otp.config.mapBoundary which is initialized on load using the OTP /metadata endpoint
- Change initZoom to be "15" per the issue thread
- Check if e.accuracy is the 22000 "wired" last resort result
- Check if the location is outside of the OTP map boundaries
Merge pull request #8 from jmfield2/leaflet-locate

Attempt to implement fix for leaflet locate() issue #5 using: