update(readme): added extra options to how to run section.

[ashwinjadhav818]

Added a section to use yasb with the installer given in the releases.

[amnweb]

Maybe add some note about the installer that is still unstable and crashing can be expected when the config is changed?
Also, I'm tired and can't thinking :( but please let me know why we need to import function_map inside base?

[ashwinjadhav818]

Added a note about the installer being unstable.

The function_map is needed inside base so that in-build widgets like volume, wifi, battery can also use the functions on their callbacks not only custom widgets.

[amnweb]

So if you call quick_settings from callbacks on_left, it should be triggered from all widgets. Did you try this?
Something like this ?

callbacks:
  on_left: "quick_settings"

[ashwinjadhav818]

yeahh but it should be exec quick_settings