Add support for "contributors" element

[mmoayyed]

Something like this:

contributors {
    contibutor {
              name "Adam Test"
              email "abcd@test.net"
            }
}

[bmuschko]

You can already do that similar to the example shown in the README file.

modifyPom {
    project {
        contributors {
            contibutor {
                name "Adam Test"
                email "abcd@test.net"
            }
        }
    }
}

[mmoayyed]

This is what I get when I try your sample:

* What went wrong:
Execution failed for task ':cas-management-webapp:install'.
> Could not publish configuration 'archives'
   > Failed to notify action.
      > groovy.lang.MissingMethodException: 
No signature of method: java.lang.Object.contibutor() is applicable for argument types: 
(java.util.Collections$EmptyMap, null) values: [[:], null]

[bmuschko]

There's at least a typo in the word "contibutor". I don't think that's the issue though.

[mmoayyed]

Ah, excellent! thanks for the catch. That was it.