Fix issue with it running incorrectly in command line.

~~~ bash
-> % cd app/
-> % ../libraries/lithium/console/li3 test libraries/li3_phpunit/tests --output=json --switches="--stderr" --outputFile="php://stdout" --raw="2>/dev/null"
{"event":"suiteStart","suite":"\/Users\/blaineschmeisser\/Sites\/devup\/apps\/vitals\/app\/libraries\/li3_phpunit\/tests","tests":0}
~~~
Update data source to return entity with results.