Merge pull request #39 from F1ash/master

add method for get pty slave fd;

lib/Session.cpp

@@ -79,6 +79,7 @@ Session::Session(QObject* parent) :
 
     //create teletype for I/O with shell process
     _shellProcess = new Pty();
+    ptySlaveFd = _shellProcess->pty()->slaveFd();
 
     //create emulation backend
     _emulation = new Vt102Emulation();
@@ -939,6 +940,10 @@ int Session::processId() const
 {
     return _shellProcess->pid();
 }
+int Session::getPtySlaveFd() const
+{
+    return ptySlaveFd;
+}
 
 SessionGroup::SessionGroup()
         : _masterMode(0)