docs: updating links to sources

README.md

@@ -18,7 +18,7 @@ You're a member of a popular open source project that involves front-end Web tec
 
 Specifically, the project involves JavaScript. Because it's a serious project, you have automated cross-browser testing for your JavaScript. You happen to use [Open Sauce](https://saucelabs.com/opensauce) for this.
 
-Unfortunately, [due to certain limitations](http://support.saucelabs.com/entries/25614798-How-can-we-set-up-an-open-source-account-that-runs-tests-on-people-s-pull-requests-), it's not possible to do cross-browser testing on pull requests "the obvious way" via Travis CI without potentially compromising your Sauce login credentials. This means that either (a) cross-browser problems aren't discovered in pull requests until after they've already been merged (b) repo collaborators must manually initiate the cross-browser tests on pull requests (and manage the resulting branches, and possibly post comments communicating the test results).
+Unfortunately, it's not possible to do cross-browser testing on pull requests "the obvious way" via Travis CI without potentially compromising your Sauce login credentials. Travis's JWT plugin was a [recommended solution](https://docs.travis-ci.com/user/sauce-connect/) for some time, but [it was deprecated as of April 17](https://blog.travis-ci.com/2018-01-23-jwt-addon-is-deprecated). This means that either (a) cross-browser problems aren't discovered in pull requests until after they've already been merged (b) repo collaborators must manually initiate the cross-browser tests on pull requests (and manage the resulting branches, and possibly post comments communicating the test results).
 
 By automating the process of initiating Travis-based Sauce tests and posting the results, cross-browser JavaScript issues can be discovered more quickly and with less work on the part of repo collaborators.