Added tag v0.1.0 for changeset 1305ab54f37a
Add installation instructions and desktop file.

Also prep for publishing to

Fixes #1.
Some refactoring

- move example config to `examples/` so we can test erroring out when no config is found
- move `read_config` to `Config::read`
Don't hardcode config file path
Move `parse` into `impl Config`
Use expect(msg) instead of unwrap()
Use absolute path for LICENSE.txt so it shows up right both in the and the hub
fix link to license text, add link to TODOs
Support for multi-arg browser commands
Initial support for picking browsers

This only considers the first element of the browser definition, so
Flatpak apps are not supported yet

e.g. `/usr/bin/firefox URL` works, but

`flatpak run org.gnome.Epiphany URL` does not work yet.
Initial code to read config file; not hooked up to `open_url` yet.