Added a CONTRIBUTING.md file for new developers
Merge pull request #862 from arthurbenemann/contributing

Added a CONTRIBUTING.md file for new developers
attempting to fix issue #869
updated map padding to show the compass.
Merge pull request #870 from ne0fhyk/fix_issue_869

Fix issue #869
added 'DISCONNECTED' event handling. Used to disable follow me when the connection with the drone is cut.
Merge branch 'master' of https://github.com/DroidPlanner/droidplanner into fix_issue_872
bug and typo fixes.
Merge pull request #873 from ne0fhyk/fix_issue_872

Fix issue #872