created pace formatter class
added status view to run view controller
Merge pull request #16 from mojotech/ce/add_status_view_to_run_view_controller

CE/add status view to run view controller
Give advance notice of maneuvers
Strip no-op maneuvers from Runs.
Factor out a RunBuilder class.
Move Pebble polyline calculations to a polyline category.
A Route class handles aggregation of MKRoutes.