Authenticate with github_api_token

Author: flip1995

.travis.yml

@@ -17,6 +17,8 @@ branches:
 env:
  global:
    - RUST_BACKTRACE=1
+   - secure: "mz8crU+l49DgEYyAUqUMyez2qdbV0YU33xWw0MNffOKfaXPuvbkW874iW132sDB/oPyrf6WuGAUOQb7Gr950m4RkLIDAQicpRrduSMq+O6JEHkVOL/dL7fCxcomJNeLPXqilRYHNK6UwQQfWfkh882AYdwwpjj58U4FEk07mgk4="
+
 
 install:
   - |
@@ -92,7 +94,7 @@ matrix:
 script:
   - |
     if [ "$TRAVIS_PULL_REQUEST" != false ]; then
-      output=$(curl -s "https://github.com/api/repos/rust-lang/rust-clippy/pulls/$TRAVIS_PULL_REQUEST" | \
+      output=$(curl -H "Authorization: token $GITHUB_API_TOKEN" -s "https://github.com/api/repos/rust-lang/rust-clippy/pulls/$TRAVIS_PULL_REQUEST" | \
         python -c "import sys, json; print(json.load(sys.stdin)['body'])" | \
         grep "changelog: " | \
         sed "s/changelog: //g")