Update .travis.yml

Author: codeyu

.travis.yml

@@ -17,6 +17,7 @@ branches:
     - dev
     - /^(.*\/)?ci-.*$/
 before_install:
+  - chmod u+x /build.sh
   - if test "$TRAVIS_OS_NAME" == "osx"; then brew update; brew install openssl; ln -s /usr/local/opt/openssl/lib/libcrypto.1.0.0.dylib /usr/local/lib/; ln -s /usr/local/opt/openssl/lib/libssl.1.0.0.dylib /usr/local/lib/; fi
 script:
   - ./build.sh