Work on prestudy:
   - Created subsection about Waterfall model
   - Several changes in the existing subsections about development models
   - Started work on existing solutions. Changes in the section about Google play.
Further work on prestudy
   - Removed App Store from prestudy
   - Modificatin on the section about Google play
Change of headline
Merge branch 'master' of https://github.com/Prosjekt2-09arduino/docs
Over the air transfer #23

Over the air transfer, Pebble
Image reference, typos #23
closes #8 Separate file containing compiling WBS-tree
#6 updated gitignore
Merge branch 'master' of https://github.com/Prosjekt2-09arduino/docs
Merge branch 'robin'
Merge branch 'master' into prestudy
Merge branch 'master' of https://github.com/Prosjekt2-09arduino/docs
Merge branch 'prestudy' of https://github.com/Prosjekt2-09arduino/docs into prestudy
Adjust image size, typos #23
Merge pull request #26 from Prosjekt2-09arduino/prestudy

Prestudy
edited something
fjernet logoen ??
Merge remote-tracking branch 'origin' into robin