Document stdin input

[sternenseemann]

This would be useful for using wtype for things like passmenu where you would automatically fake type in a stored password via wtype instead of copying it to the clipboard.

Currently it'd need to be passed via argv which means leaking it to the process list.

[atx]

This has been added in #11. It is not yet documented in the manpage though. Done simply via wtype -.

[sternenseemann]

Oh thanks, missed that!

[albsch]

When I execute echo "hello" | wtype -, I expect hello to be typed and be equivalent to wtype hello. Instead, using stdin results in an extra RETURN key to be used after the input ends, equivalent to wtype hello -P RETURN. Is this intended?
Edit: Nevermind, some commands introduce new lines at the end. Disabling the newline (e.g. echo -n "hello") fixes this.