Update .travis.yml

.travis.yml

@@ -52,7 +52,7 @@ before_script:
 - if [ "$TRAVIS_OS_NAME" == "linux" ]; then wget https://github.com/paulsapps/Ogre1.9/releases/download/1.9.0/ogre-build_1.9.0-1_amd64.deb; fi
 
 - if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew update; fi
-- if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew outdated wget || brew wget boost; fi
+- if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew outdated wget || brew upgrade wget; fi
 - if [ "$TRAVIS_OS_NAME" == "osx" ]; then wget https://github.com/paulsapps/Ogre1.9/releases/download/1.9.0/OgreSDK_v1-9-0.dmg; fi
 - if [ "$TRAVIS_OS_NAME" == "osx" ]; then hdiutil attach OgreSDK_v1-9-0.dmg; fi
 - if [ "$TRAVIS_OS_NAME" == "osx" ]; then ls; fi