Update readme

Author: andrewbroberg

README.md

@@ -24,12 +24,6 @@ $accounts = $api->getTransactions($accounts[0], '12/04/2017', '22/04/2017');
 
 Please see [CHANGELOG](CHANGELOG.md) for more information on what has changed recently.
 
-## Testing
-
-``` bash
-$ composer test
-```
-
 ## Contributing
 
 Please see [CONTRIBUTING](CONTRIBUTING.md) and [CONDUCT](CONDUCT.md) for details.