Back to c++0x from c++11

Fix #31

Author: dahlia

.travis.yml

@@ -9,13 +9,7 @@ python:
 - 2.7
 - 3.3
 - 3.4
-before_install:
-- 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 libstdc++-4.8-dev
-- sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-4.8 20
-- sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 20
 - pip install -e . "Werkzeug >= 0.9" coverage coveralls
 script:
 - coverage run --source sass,sassc,sassutils setup.py test