Migrate from travis-ci.org to travis-ci.com

More info available @ https://tracker.moodle.org/browse/MDLSITE-6246

Author: stronk7

README.md

@@ -1,7 +1,7 @@
 Moodle Code Checker
 ===================
 
-[![Build Status](https://travis-ci.org/moodlehq/moodle-local_codechecker.svg?branch=master)](https://travis-ci.org/moodlehq/moodle-local_codechecker)
+[![Build Status](https://travis-ci.com/moodlehq/moodle-local_codechecker.svg?branch=master)](https://travis-ci.com/moodlehq/moodle-local_codechecker)
 
 Information
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