check links in non-free.md with awesome_bot

.travis.yml

@@ -15,7 +15,7 @@ before_script:
 script:
   - 'if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then git diff origin/master -U0 README.md | grep -Pos "(?<=^\+).*" >> temp.md; fi || (exit 0)'
   - 'if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then node tests/test.js -r README.md -d temp.md; else node tests/test.js -r README.md; fi'
-  - 'if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then if [ -f temp.md ]; then awesome_bot temp.md --allow-redirect --skip-save-results --allow 202 --white-list airsonic.github.io/docs/apps; else (exit 0); fi else awesome_bot README.md --allow-redirect --skip-save-results --allow 202 --white-list airsonic.github.io/docs/apps; fi'
+  - 'if [ "$TRAVIS_PULL_REQUEST" != "false" ]; then if [ -f temp.md ]; then awesome_bot temp.md --allow-redirect --skip-save-results --allow 202 --white-list airsonic.github.io/docs/apps; else (exit 0); fi else awesome_bot README.md,non-free.md --allow-redirect --skip-save-results --allow 202 --white-list airsonic.github.io/docs/apps; fi'
 
 notifications:
   email: false