wallet & daemon dev guide improvements

Created by: bigreddmachine

Overview:

• Edit and re-format wallet-rpc developer guide to include more information and examples.
• Create new daemon-rpc developer guide, including examples.
• Add instructions to README for locally serving getmonero.org to test updates.

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This pull request represents work done for the follow Forum Funding System project:

• "Improving Developer Guides to include Simplewallet examples and Bitmonerod methods and examples"
• https://forum.getmonero.org/8/funding-required/2504/improving-developer-guides-to-include-simplewallet-examples-and-bitmonerod-methods-and-examples