Merge pull request #3 from dadoonet/master

Update maven assembly plugin version to 2.3
Added build-helper plugin to add groovy sources to -sources artifact.
Merge pull request #5 from tboettch/master

Include groovy classes in -sources jar
add license and repo
Merge remote-tracking branch 'origin/master'
Upgraded to ES 0.20
Upgraded to ES 0.20.2
Prepare for 1.2.0 release
Moved to new development version
Updated README
Added support for warmers.

Now we can do:
gclientInstance.admin.indices.preparePutWarmer(warmerName)

Where as before we had to grope GClient to get an explicit handle of
client:

gClientInstance.client.admin().indices().preparPutWarmer(warmerName).

Having the preparePutWarmer wrapper makes the api more consistent, I think.
add additional warmer APIs
upgrade to latest groovy lib (2.1.0)
release 1.3.0
move to 1.4.0 snap