Added import code for BOTH 2.,7 and 3

Demo_Template.py

@@ -0,0 +1,36 @@
+#choose one of these are your starting point
+
+# ---------------------------------#
+# DESIGN PATTERN 1 - Simple Window #
+# ---------------------------------#
+#!/usr/bin/env python
+import sys
+if sys.version_info[0] < 3:
+    import PySimpleGUI27 as sg
+else:
+    import PySimpleGUI as sg
+
+layout = [[ sg.Text('My layout') ]]
+
+window = sg.Window('My window').Layout(layout)
+button, value = window.Read()
+
+
+# -------------------------------------#
+# DESIGN PATTERN 2 - Persistent Window #
+# -------------------------------------#
+#!/usr/bin/env python
+import sys
+if sys.version_info[0] < 3:
+    import PySimpleGUI27 as sg
+else:
+    import PySimpleGUI as sg
+
+layout = [[ sg.Text('My layout') ]]
+
+window = sg.Window('My new window').Layout(layout)
+
+while True:     # Event Loop
+    button, value = window.Read()
+    if button is None:
+        break