rest interface docs missing key details, odd mix of IPs

These docs have an odd mix of IP addresses and with respect to 4.5 are missing some key details. A simple copy/paste of them didn't work and they were slightly non-trivial to debug.

This script is a good logical replacement with some new information like how to enable memory optimized indexes:

#!/usr/bin/env bash
set -xe

1. Setup Services
   curl -i -u Administrator:password -X POST \
   http://127.0.0.1:8091/node/controller/setupServices \
   -d 'services=kv%2Cn1ql%2Cindex'

1. Initialize Node with /couchbase for index and data path
   curl -i -u Administrator:password -X POST \
   http://127.0.0.1:8091/nodes/self/controller/settings \
   -d 'path=%2Fcouchbase&index_path=%2Fcouchbase'

1. Setup Administrator username and password
   curl -i -X POST \
   http://127.0.0.1:8091/settings/web \
   -d 'password=password&username=Administrator&port=SAME'

1. Setup Memory Optimized Indexes
   curl -i -u Administrator:password -X POST \
   http://127.0.0.1:8091/settings/indexes \
   -d 'storageMode=memory_optimized'

1. Setup Index RAM Quota
   curl -i -u Administrator:password -X POST \
   http://127.0.0.1:8091/pools/default \
   -d 'memoryQuota=18432' -d 'indexMemoryQuota=34816'

1. Setup Bucket
   curl -i -u Administrator:password -X POST \
   http://127.0.0.1:8091/pools/default/buckets \
   -d 'flushEnabled=1&replicaIndex=0&replicaNumber=1&ramQuotaMB=18432&bucketType=membase&name=default&authType=sasl&saslPassword='