Merge pull request #2 from ysb33r/master

Moved code from jruby-gradle-plugin to here
Bring over JRubyWar task definition and make jruby-gradle-war-plugin "work"
Add the jrubyCacheJars dependency onto jrubyPrepare and jrubyCleanJars onto clean
Pin the war plugin to a released version of the base plugin
Moved war README content here from base plugin
Forgot to add this file during restructuring
Updated to use warblerBootstrapVersion from 'base'
Correct package structure. Fixed broken unittests
Resolved merge conflict in build.gradle