fixed comment
Incorporated various suggestions for improvement.
- Used centralized handling of platform type, avoiding duplications of
"The Android Project" magic String

- Removed PlatformStrategyFactory, as it anyway was not used
consistently, and as the strategy depends on the input types.
Merge pull request #49 from jeisfeld/master

Cleanup of platform handling
Merged improvements to the skeletons.
Added week-6-assignment-5 skeletons.
Force adding project.properties.
Removed project.properties that was in the wrong place.
Added back a {}.
Fixed documentation.
Fixed some issues that were confusing students.
Enable offline "downloading" by default.
added a final.
Merge remote-tracking branch 'upstream/master'

* upstream/master:
  added a final.
  Enable offline "downloading" by default.
  Fixed some issues that were confusing students.
  Fixed documentation.
  Added back a {}.
  Removed project.properties that was in the wrong place.
  Force adding project.properties.
  Added week-6-assignment-5 skeletons.
  Merged improvements to the skeletons.
  - Used centralized handling of platform type, avoiding duplications of "The Android Project" magic String
  Incorporated various suggestions for improvement.
  fixed comment