Add docs for local Postgres and connection pooling.

[cball]

Based on discussion in redwoodjs/redwoodjs.com#87, I've added two docs to the docs section.

The first gives more information around Connection Pools, and includes relevant links to recommended providers. (Rendered)

The second documents how to setup Postgres locally, and how to have Redwood create/migrate the new database. (Rendered)

[thedavidprice]

Looks great, @cball I read through each for clarity and grammar/spelling check, which is all good for each file.

I did check each link. However, I did not run through examples or confirm specific instructions work for the cases given. Assuming you’ve done this locally and confirmed.

[cannikin]

@thedavidprice Do we want these to get their own standalong pages on redwoodjs.com? We'd just need to add to the build script over there.

[thedavidprice]

Boom!
redwoodjs/redwoodjs.com#88

[cball]

Awesome! @thedavidprice it looks like we may need to remove the # .env comment from the code section in the docs... it seems to be tripping up whatever is parsing the markdown into html and assuming it should be part of the TOC.

[cball]

PR opened: #425