Update .travis.yml

Last try or I give up.

.travis.yml

@@ -1,12 +1,11 @@
 language: cpp
 
-compiler:
- - gcc
 before_install:
- - sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y
- - sudo apt-get update -qq
- - if [ "$CXX" = "clang++" ]; then sudo apt-get install -qq libstdc++-4.8-dev; fi
- - if [ "$CXX" = "g++" ]; then sudo apt-get install -qq g++-4.8; fi
- - if [ "$CXX" = "g++" ]; then export CXX="g++-4.8" CC="gcc-4.8"; fi
+  - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
+  - sudo apt-get update -qq
+
+install:
+  - sudo apt-get install -qq gcc-4.8 g++-4.8 
+  - sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 90
 
 script: make