Authenticate with github_api_token

Author: flip1995

.travis.yml

@@ -17,6 +17,7 @@ branches:
 env:
  global:
    - RUST_BACKTRACE=1
+   - secure: "OKulfkA5OGd/d1IhvBKzRkHQwMcWjzrzbimo7+5NhkUkWxndAzl+719TB3wWvIh1i2wXXrEXsyZkXM5FtRrHm55v1VKQ5ibjEvFg1w3NIg81iDyoLq186fLqywvxGkOAFPrsePPsBj5USd5xvhwwbrjO6L7/RK6Z8shBwOSc41s="
 
 install:
   - |
@@ -94,7 +95,7 @@ matrix:
 script:
   - |
     if [ "$TRAVIS_BRANCH" == "auto" ] || [ "$TRAVIS_BRANCH" == "try" ]; then
-      output=$(curl -s "https://api.github.com/repos/rust-lang/rust-clippy/pulls/$TRAVIS_PULL_REQUEST" | \
+      output=$(curl -H "Authorization: token $GITHUB_API_TOKEN" -s "https://api.github.com/repos/rust-lang/rust-clippy/pulls/$TRAVIS_PULL_REQUEST" | \
         python -c "import sys, json; print(json.load(sys.stdin)['body'])" | \
         grep "changelog: " | \
         sed "s/changelog: //g")