Initial Build Writeup and Flow diagram

Change-Id: I52ffb01763e127f31403e1d0f76ecf7e6d6e1419
Reviewed-on: http://review.couchbase.org/34683
Reviewed-by: Sriram Melkote <siri@couchbase.com>
Tested-by: Deepkaran Salooja <deepkaran.couchbase@gmail.com>