Update README.md

[fichek]

Added the banner like on web app repo, removed some outdated bits and tried to clarify a few others, fixed some typos, added link to the font we use.

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[jlucidar]

Just reviewed this, can you rebase your PR on master instead of dev, as it's documentation ? So people coming here will see your updates ;) don't want to cherry pick :p

[fichek]

Just reviewed this, can you rebase your PR on master instead of dev, as it's documentation ? So people coming here will see your updates ;) don't want to cherry pick :p

I did originally base it off master (hence all the force pushes 😄) but wasn't sure about whether some of the updated info was true for the current public alpha build 😅 I can rebase it back to master, sure!

[fichek]

@jlucidar rebased back to master ✅