Problem: The install instructions in the readme contains quotes because
it has a `*`, but `#semver:` does what we need without the quotes. The
`docs/install.md` file also has some unnecessary complexity, like
cloning via SSH (only useful for maintainers), which I think we can
safely remove.
Solution: Change the install instruction and reorganize
`docs/install.md` to be more relevant to people who are installing from
source.
Problem: The Termux install is new and exciting and there isn't any
documentation on how to experiment with it.
Solution: Add some documentation like we've done with systemd and
Docker so that we can collaborate and figure it out in the repo!
