Added rand function from Dan Woods
Merge branch 'dan-woods-feature/list-rand-extensions'

* dan-woods-feature/list-rand-extensions:
  Added rand function from Dan Woods
  adding List.rand() functionality and updating documentation for ConfigObject as well
Added Apache 2.0 License
Fixed up authors block
`rand()` returns `T`, all others return `List<T>`
Merge branch 'feature/config-object-extensions' of https://github.com/dan-woods/groovy-common-extensions into dan-woods-feature/config-object-extensions
Slight cleanup
Merge branch 'dan-woods-feature/config-object-extensions'

* dan-woods-feature/config-object-extensions:
  Slight cleanup
  updating test to more appropriately reflect use case
  adding ConfigObject merge with source key/value precedence
Added transposedIterator for zipping lists of lists into an iterator
Tidied up README
Added to build to generate groovydoc and source jars
Started writing javadoc
Up to gradle 1.3
Added junit so we can run tests of javadoc groovyTestCase pre tags
Added javadocs for NumericExtensionMethods
Added nexus plugin, pushed to sonatype...
Fingers crossed ;-)
Updated authors
Up to gradle 1.4 and groovy 2.1.0
Make uploadArchives dependant on test
sourceCompatibility=1.6