Added the sample code from wxPython In Action to the samples dir

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@42925 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/samples/wxPIA_book/Chapter-09/message_box.py

@@ -0,0 +1,16 @@
+import wx
+
+if __name__ == "__main__":
+    app = wx.PySimpleApp()
+    dlg = wx.MessageDialog(None, "Is this explanation OK?",
+                          'A Message Box',
+                          wx.YES_NO | wx.ICON_QUESTION)
+    retCode = dlg.ShowModal()
+    if (retCode == wx.ID_YES):
+        print "yes"
+    else:
+        print "no"
+    dlg.Destroy()
+
+    retCode = wx.MessageBox("Is this way easier?", "Via Function",
+            wx.YES_NO | wx.ICON_QUESTION)