Major update of all demo programs to use new PEP8 bindings, etc

DemoPrograms old/Demo_Tabs_Simple.py

@@ -0,0 +1,25 @@
+#!/usr/bin/env python
+import sys
+if sys.version_info[0] >= 3:
+    import PySimpleGUI as sg
+else:
+    import PySimpleGUI27 as sg
+
+tab1_layout =  [[sg.T('Tab 1')],
+                [sg.T('Put your layout in here')],
+                [sg.T('Input something'),sg.In(key='_IN0_')]]
+
+tab2_layout = [[sg.T('Tab2')]]
+
+
+layout = [[sg.TabGroup([[sg.Tab('Tab 1', tab1_layout), sg.Tab('Tab 2', tab2_layout)]], key='_TABGROUP_')],
+                         [sg.Button('Read')]]
+
+window = sg.Window('My window with tabs', default_element_size=(12,1)).Layout(layout)
+
+
+while True:
+    event, values = window.Read()
+    sg.PopupNonBlocking('button = %s' % event, 'Values dictionary', values)
+    if event is None:           # always,  always give a way out!
+        break