Refactor documentation

[zootella]

Do a big refactor of the documentation, and add a bunch more. possibly like this:

• Hello, Ara: readme, welcome, summary, short topics: favor a longer readme rather than a lot of different files
• Cheat Sheet: all the commands from all the other docs, a single line note about what they do
• Install: setup your mac or windows pc to build the native components
• Code Signing: how to build unsigned, how signing works, how we got certificates from apple and godaddy
• User's Guide: user's guide for the fan, steps and screenshots to using the app
• Creator's Guide: user's guide for the creator
• Crypto Guide: user's guide for crypto, steps and screenshots to moving around ARA tokens, including metamask, mew and ledger
• Network Architecture: architecture of the network, the archiver and the resolver, servers run by us and dat people, DHTs
• Components Architecture: architecture of the application, tortuga, electron app, ara modules, dat and ethereum modules, with a chart
• Test: debug, logs, analytics, and tests, including what we use, how to use it, how it all works, kinesis and privacy
• Contributing: and releases, how we make a branch, submit a pr, change the version number, tag a release, upload it to the web