Added an example for PyQt5 (#389)

* added pyqt5 example

* fixed example path on build

* improved pyqt example

* simplified example

examples/cpp/RemoteTerm/shell-srv.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python
+
+import sys
+import os
+import socket
+import pty
+
+def usage(program):
+    print "Example(server-side) for remote terminal of QTermWidget."
+    print "Usage: %s ipaddr port" %program
+
+
+def main():
+    if len(sys.argv) != 3:
+        usage(sys.argv[0])
+        sys.exit(1)
+    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    try:
+        s.bind((sys.argv[1], int(sys.argv[2])))
+        s.listen(0)
+        print "[+]Start Server."
+    except Exception as e:
+        print "[-]Error Happened: %s" %e.message
+        sys.exit(2)
+
+    while True:
+        c = s.accept()
+        os.dup2(c[0].fileno(), 0)
+        os.dup2(c[0].fileno(), 1)
+        os.dup2(c[0].fileno(), 2)
+
+        # It's important to use pty to spawn the shell.
+        pty.spawn("/bin/sh")
+        c[0].close()
+    
+if __name__ == "__main__":
+    main()