Impleneted the functionality of getting thumbnail

- integrated ffmpeg and libpng lib into project
- gets the thumbnail of the video using the ffmpeg
- saves the get thumbnail as a png file
- for now it is not possible to test this as the main.cpp is not ready for
  that yet.
- There is a commented code that allowed to generate thumbnails also for
  the .avi files, but when I uncomment this cose it crashes on the device,
  but works fine on the simulator
Added the new .pro and bar-description.xml files
Impleneted the functionality of getting thumbnail

- integrated ffmpeg and libpng lib into project
- gets the thumbnail of the video using the ffmpeg
- saves the get thumbnail as a png file
- for now it is not possible to test this as the main.cpp is not ready for
  that yet.
- There is a commented code that allowed to generate thumbnails also for
  the .avi files, but when I uncomment this cose it crashes on the device,
  but works fine on the simulator
Added the new .pro and bar-description.xml files
Impleneted the functionality of getting thumbnail

- integrated ffmpeg and libpng lib into project
- gets the thumbnail of the video using the ffmpeg
- saves the get thumbnail as a png file
- for now it is not possible to test this as the main.cpp is not ready for
  that yet.
- There is a commented code that allowed to generate thumbnails also for
  the .avi files, but when I uncomment this cose it crashes on the device,
  but works fine on the simulator
Merge remote-tracking branch 'lilfork/getthumbnail'
Merge branch 'master' of https://github.com/lkarapetyan/BBNTMP into getthumbnail
 adding test changes
Merge pull request #15 from lkarapetyan/getthumbnail

Getthumbnail