Another small change.

.travis.yml

@@ -14,6 +14,16 @@ os:
   - linux  
   
 before_install:
+
+  # OpenCV dependencies and boost
+  - if [ ${TRAVIS_OS_NAME} = linux ]; then  
+      sudo apt-get install git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev;      
+      sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev checkinstall;
+      sudo add-apt-repository -y ppa:boost-latest/ppa;
+      sudo apt-get update;
+      sudo apt-get install libboost1.55-all-dev;
+    fi
+
   # g++4.8.1
   - if [ "$CXX" = "g++" ]; then
       if [ ${TRAVIS_OS_NAME} = linux ]; then
@@ -34,24 +44,15 @@ before_install:
       fi
     fi
 
-  # OpenCV dependencies and boost
-  - if [ ${TRAVIS_OS_NAME} = linux ]; then  
-      sudo apt-get install git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev;      
-      sudo apt-get install python-dev python-numpy libtbb2 libtbb-dev libjpeg-dev libpng-dev libtiff-dev libjasper-dev libdc1394-22-dev checkinstall;
-      sudo add-apt-repository -y ppa:boost-latest/ppa;
-      sudo apt-get update;
-      sudo apt-get install libboost1.55-all-dev;
-    fi
-
   # OpenCV dependencies for osx
   - if [ ${TRAVIS_OS_NAME} = osx ]; then  
       brew update;
       brew tap homebrew/science;
       /usr/bin/yes | pip uninstall numpy;
       brew install tbb
-    fi  
+    fi
-      
+
-before_script:  
+before_script:
    # Installing openCV 3.1
   - wget https://github.com/Itseez/opencv/archive/3.1.0.zip
   - sudo unzip 3.1.0.zip