Summary:
Now you can use the setup configuration to overwrite and override the keymaps
in the ivy window. Each of the actions have now been givin a "key", you can use
the keys to run action on keymaps defined in the config. They will all be
registered in the buffer and run when pressed.
The readme has been updated to document how do this.
Test Plan:
We have the tests that still run. It has been tested manually and gone though
QA before getting merged.
