added missing policies, minor lang fixes
added missing policies, minor lang fixes

added Scan policy doc (taken from as_policy.h)
added missing field to remove policy (taken from as_policy.h)
reordered to match alphabetic order as listed on configuration.md
effecting should be -> affecting
aerospike/aerospike-client-nodejs,aerospike/aerospike-client-nodejs,aerospike/aerospike-client-nodejs,aerospike/aerospike-client-nodejs,aerospike/aerospike-client-nodejs