Add gitignore and How To RPC Docs
More howto changes
More howto changes
Assorted HowTo updates
Add how-to for RPC networks on RAX cloud servers

I added a how-to for creating neutron networks in RPC environments
that reside on RAX public cloud servers.
Merge pull request #1 from rpcdocs/msk/rpcraxcloud1

Add how-to for RPC networks on RAX cloud servers
Minor clarifications

I clarified a few things.
Merge pull request #2 from rpcdocs/msk/rpcraxcloud2

Minor clarifications