Just push docs on MASTER

Author: wackywendell

.travis.yml

@@ -9,13 +9,13 @@ script:
   - cargo doc --verbose
   - mv target/doc doc
 
-#[ $TRAVIS_BRANCH = master ] && 
 after_success: |
+  [ $TRAVIS_BRANCH = master ] && 
   [ $TRAVIS_PULL_REQUEST = false ] &&
   echo '<meta http-equiv=refresh content=0;url=primes/index.html>' > doc/index.html &&
   pip install ghp-import --user $USER &&
   $HOME/.local/bin/ghp-import -n doc &&
-  git push -qf https://${GH_TOKEN}@github.com/${TRAVIS_REPO_SLUG}.git gh-pages
+  git push -f https://${GH_TOKEN}@github.com/${TRAVIS_REPO_SLUG}.git gh-pages
 notifications:
   email:
     on_success: never