Redefine building matrix

Author: winterheart

.travis.yml

@@ -15,8 +15,7 @@ addons:
       - cmake-data cmake libglu1-mesa-dev libgl1-mesa-dev
 
 install:
-  - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; pip3 install --upgrade pip ; pip3 install conan ; fi
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; pip install --upgrade pip ; pip install conan ; fi
+  - pip3 install --upgrade pip ; pip3 install conan
   - conan user
   - conan remote add bincrafters https://api.bintray.com/conan/bincrafters/public-conan