test travis revert

.travis.yml

@@ -39,7 +39,7 @@ before_install:
 - git submodule update --init --recursive
 # - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo ln -s /usr/bin/gcc-6 /usr/local/bin/gcc; sudo ln -s /usr/bin/g++-6 /usr/local/bin/g++; fi
 #  ls /usr/local/include ; sudo mv /usr/local/include /usr/local/include-bak; sudo mkdir /usr/local/include; chmod u+w /usr/local/include;
-- if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew install freetype libevent sqlite lua dylibbundler; fi
+- if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then brew update; brew install freetype libevent sqlite lua dylibbundler; fi
 #  ls /usr/local/include;
 #  sudo rm -rf /usr/local/include/unistring;
 #  sudo rm -rf /usr/local/include/lzma;