Add -y option for add-apt-repository in Travis

diff --git a/.travis.yml b/.travis.yml
index 9de063371c2c55d90087371bf6c333737555b218..5603dbf9532bd39ec67efe89f49baab812f87c20 100644 (file)
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,7 +8,7 @@ virtualenv:
 
 # command to prepare the system to install prerequisites or dependencies
 before_install:
- - sudo add-apt-repository ppa:gstreamer-developers
+ - sudo add-apt-repository -y ppa:gstreamer-developers
  - sudo apt-get -qq update
  - sudo apt-get install -qq libhdf5-serial-dev python-h5py
  - sudo apt-get install -qq libatlas-dev libatlas-base-dev gfortran