Changes in apt-add-repository line - added echo.

Signed-off-by: Lukasz Gromanowski <lgromanowski@gmail.com>

.travis.yml

@@ -8,7 +8,7 @@ before_script:
  - cmake ..
 before_install:
  - git submodule update --init --recursive
- - sudo apt-add-repository ppa:openmw/deps
+ - echo -e "\n" | sudo apt-add-repository ppa:openmw/deps
  - sudo apt-get update -qq
  - sudo apt-get install -qq ffmpeg-dev boost-dev libbullet libogre-static mygui-static
 script: make