Index support

[jo]

include https://github.com/jo/couchdb-create-index

[karlwestin]

Ah here's the tool :D

I was trying to just create an _index.json file like

{
    "index": {
        "fields": ["groupId"]
    },
    "name": "groupId",
    "type": "json"
}

and hope that would be pushed, but that did not work out