Fix for grails.home set to not cause source to be fetched

[anshbansal]

Fix #339

[anshbansal]

Seems there is a problem. I will fix it today.

[graemerocher]

The fix doesn't seem to work on the CI server

[anshbansal]

@graemerocher I noticed that. Will send an updated PR.

[rlovtangen]

Thanks, @anshbansal.
Would have been great to have this property in a file not under source control, though. gradle.properties is under source control, so when setting grails.home there, you need to make sure to not accidentally commit the change.

[jeffscottbrown]

I think @rlovtangen makes a good point. Can we get this pulled out into a separate properties file?

[graemerocher]

@jeffbrown @rlovtangen Why can't it just go into ~/.gradle/gradle.properties rather than adding more complexity?

[rlovtangen]

@graemerocher yes, that's good enough for me. Needs to update patchesDoc.gdoc, then.

[anshbansal]

updated the docs