Fix curse integration

This will allow for curse uploading when the "gradle curse" command is called. the only thing that has to happen on your hand is to create a curse.properties file and add your api_token and project_id to it. As you see this is ignored by git so nobody will get to know your api tokens. it should look like this:

```
api_token=TOKEN_HERE
project_id=ID_HERE
```

this should close #132