Create IntelliJ project

Change-Id: I245642268cab556f2e00757b70e8559151edc3f2
Reviewed-on: http://review.couchbase.org/27627
Tested-by: Trond Norbye <trond.norbye@gmail.com>
Reviewed-by: Sergey Avseyev <sergey.avseyev@gmail.com>