Option to record entire window

[edridgedsouza]

I made a couple of changes:

1. if you click the unity titlebar, it'll record the entire screen, including the titlebar and dock (Unity only, not tested on other DE's)

2. Uses espeak instead of a notification sound

3. Changed some notifications to simple terminal outputs so they don't interfere with the recording

[rhcarvalho]

@edridgedsouza thanks for the PR. Sorry I did not reply earlier, I was not receiving notifications for this repo.