updates and more features

Added IDEA integration for debugging (need to try in Eclipse too),
dynamic task generation and a couple of examples from the User Guide
Merge pull request #1 from lauramoore/master

pull in latest from Laura's
added license info, Ant sample
upgrade to Gradle 1.11, update .gitignore

Changed wrapper to use Gradle 1.11 (latest) and updated .gitignore to
ignore Eclipse project files and output
added archetype Maven Java project

added a Java Maven project archetype to be demonstrate converting a Java
Maven project to Gradle
Merge pull request #4 from martyblood/master

merge in latest gradle samples