fix travis

.travis.yml

@@ -31,8 +31,8 @@ addons:
 before_install:
 - git submodule update --init --recursive
 # - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo ln -s /usr/bin/gcc-6 /usr/local/bin/gcc; sudo ln -s /usr/bin/g++-6 /usr/local/bin/g++; fi
-  brew update
-  brew install freetype libevent sqlite dylibbundler;
+- brew update
+- brew install freetype libevent sqlite dylibbundler;
 - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then 
   sudo rm -rf /usr/local/include/unistring;
   sudo rm -rf /usr/local/include/lzma;