Fix spelling of configuration parameter "client_min_messages".
Add documentation for the optional configuration parameters: EnableFunctionLookupCache and RaiseError.
Merge pull request #8 from mrmuskrat/docs-for-EnableFunctionLookupCache

Add documentation for the optional configuration parameters
Merge pull request #6 from mrmuskrat/client_min_messages

Fix spelling of configuration parameter "client_min_messages".
Fix typo in new