Created by: nschonni
- This adds Travis CI checking for the validity of links when stuff is PR'd.
- Updates to use the structure and gem setup used by the GitHub sites
__ There are still broken links that will fail the build right now, but I believe they are being looked at in other threads so they were left out of this
- ./_site/posts/how-to-hide-content/index.html
* External link https://developer.yahoo.com/blogs/ydn/clip-hidden-content-better-accessibility-53456.html failed: 404 No error
- ./_site/posts/understanding-visual-impairment/index.html
* External link http://www.ffb.ca/eye_conditions/RD_diseases.html failed: 404 No error
- ./_site/posts/what-is-color-contrast/index.html
* External link https://developer.yahoo.com/blogs/ydn/techniques-high-contrast-friendly-icons-153038779.html failed: 404 No error
- ./_site/resources.html
* External link http://www.accessifyforum.com/ failed: response code 0 means something's wrong.
It's possible libcurl couldn't connect to the server or perhaps the request timed out.
Sometimes, making too many requests at once also breaks things.
Either way, the return message (if any) from the server is: Couldn't resolve host name
* External link http://yaccessibilityblog.com/ failed: 503 No error
* External link https://medium.com/web-accessibility/8f7161340cc1 failed: 404 No error