Validate Links
Hello, I wrote a tool that can validate README links (valid URLs, not duplicate). It can be run when someone submits a pull request or a commit is pushed. 

 It is currently being used by 
- https://github.com/vsouza/awesome-ios 
- https://github.com/matteocrippa/awesome-swift 
- https://github.com/dkhamsing/open-source-ios-apps 
- and many [more](https://github.com/dkhamsing/awesome_bot/blob/master/status/status.md)

Examples 
- https://travis-ci.org/matteocrippa/awesome-swift/builds/96526196 ok ✅
- https://travis-ci.org/matteocrippa/awesome-swift/builds/96722421 link redirected / rename 🔴
- https://travis-ci.org/dkhamsing/open-source-ios-apps/builds/96763135 bad link / project deleted 🔴
- https://travis-ci.org/dkhamsing/open-source-ios-apps/builds/95754715 dupe 🔴

If you are interested, connect `awesome-design` to https://travis-ci.org/ and add a [`.travis.yml`](https://github.com/dkhamsing/open-source-ios-apps/blob/master/.travis.yml) file to the project. You can also use https://circleci.com/ which does not not require a config file in your repo.

See https://github.com/dkhamsing/awesome_bot for options, more information 
Feel free to leave a comment :smile:
