'jacocoTestReport' not found in root project 'src'

Thanks for the plugin.

I have followed your steps and integrate it into my project.
I am able to get report by running following command:
`$ ./gradlew jacocoTestReport`

When I push my commit to upstream, Bitrise CI catches it and tries to run it. I ask Bitrise to run above command, however this is what I get:
```
FAILURE: Build failed with an exception.

* What went wrong:
Task 'jacocoTestReport' not found in root project 'src'.
...
```

Any idea would be appreciated.