#20 ability to send control signals to remote process

[sid]

Signals cannot be passed at present through OutputBuffer as they are not recognized by the console. We need a way to pass these signals.

ABRT
ALRM
FPE
HUP
ILL
INT
KILL
PIPE
QUIT
SEGV
TERM
USR1
USR2

similar to this function implemented in a proprietary package - http://www.sshtools.com/content/developer/maverick/docs/com/maverick/ssh2/Ssh2Session.html#signal\(java.lang.String)