Update CI badge to travis-ci.com

Author: hsluoyz

README.md

@@ -3,7 +3,7 @@ TypeORM Adapter
 [![NPM version][npm-image]][npm-url]
 [![NPM download][download-image]][download-url]
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-[![Build Status](https://travis-ci.org/node-casbin/typeorm-adapter.svg?branch=master)](https://travis-ci.org/node-casbin/typeorm-adapter)
+[![Build Status](https://travis-ci.com/node-casbin/typeorm-adapter.svg?branch=master)](https://travis-ci.com/node-casbin/typeorm-adapter)
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