Updated README with note about current fork status
Added Index property to VBucket struct

Index property is used to keep track of  the position of a
VBucket in the vbucket map
Fixed some concurrency/race conditions during node failure (WIP?)
NCBC-134: Failover on bootstrap node never recovers
NCBC-168: Don't swallow pooled socket errors
There is no constructor of VBucket that takes two arguments, so adding index as a third parameter to the VBucket initialize statement.
Fix Increment call that takes a CAS parameter
Possible fix for http://support.couchbase.com/requests/2380
Handle scenario where the object that returns from CasMutate has a null StatusCode property