fix travis with a wait

cnishina · cnishina · commit 92057fad415d · 2018-12-14T19:38:47.000-08:00
diff --git a/.travis.yml b/.travis.yml
@@ -36,7 +36,7 @@ addons:
       - g++-4.8
 
 before_install:
-  - g++-4.8 --version
+  - travis_wait g++-4.8 --version
 
 before_script:
   - npm run install_testapp
