Moved file copy to script rather than after_script

.travis.yml

@@ -9,8 +9,6 @@ before_script:
 
 script:
   - "echo 'Tested :)'"
-
-after_script:
   - "cp build/transloadit-js-client.js examples/playground/static/js/transloadit-js-client.js"
 
 deploy: