Priliminary Notification Icon Success

Updated sdk minimum version to equal 16 in build.gradle to correspond
with android_manifest.xml which was already 16.

Notification icon works when the application is started and returns to
the application when selected.

Issue #3
notification icon displays on start & stop

currently displays icon on start and removes it on stop but selecting
the icon from the status/notification tray does currently does nothing

Issue #3
Notification Icon Working

Status bar and Notification Tray are working.
Selecting the notification in the notification
tray brings the app back to the foreground.

Issue #3
Clean Up: Notification Icon

Slight refactor to place code where (I think) it belongs.

Issue #3
Clean Up: Notification Icon

Slight refactor to place code where (I think) it belongs.
A little more clean up.

Issue #3
Merge branch 'master' into notification-icon-new

Conflicts:
	RouteTracker/src/main/java/com/pedalportland/routetracker/MainActivity.java
dealt with conflict

Issue #3
Reformatting for Better Visibility

Put each argument on own line for longer method calls

Issue #3
Merge pull request #39 from PedalPDX/notification-icon-new

Resolve #3 notification icon.