Write tab info to named pipe

Use named pipe to write current-tab info to (much easier to work with than a file).

Thanks to Andy Rosen for pointing this out.

Bugfix

Don't split environment variables on comma.

Add support for other Firefox editions

Added support for Nightly and Developer Edition. Closes #2.

The workflow should detect which Firefox it's connected to and behave accordingly.

Bugfix

• Fix #3 — Ensure NativeMessagingHosts directory exists

Initial release

v0.1.0

Document "Current Tab Actions"