Added licensing info to README and all source files

README.md

@@ -114,4 +114,6 @@ sender, or the following code example:
     p.resume()
     p.disconnect()
 
+# LICENSE
 
+The Printrun suite is licensed under the terms of GPL version 3, or, at your option, any later version.

gviz.py

+# Licensed under the terms of GPL version 3, or, at your option, any later version.
 import wx,time
 
 class window(wx.Frame):

plater.py

 #!/usr/bin/env python
+# Licensed under the terms of GPL version 3, or, at your option, any later version.
 
 # Set up Internationalization using gettext
 # searching for installed locales on /usr/share; uses relative folder if not found (windows)

printcore.py

 #!/usr/bin/env python
-# Licensed under GPLv3
+# Licensed under the terms of GPL version 3, or, at your option, any later version.
 
 from serial import Serial
 from threading import Thread

projectlayer.py

+# Licensed under the terms of GPL version 3, or, at your option, any later version.
 import xml.etree.ElementTree
 import wx
 import time

pronsole.py

 #!/usr/bin/env python
+# Licensed under the terms of GPL version 3, or, at your option, any later version.
 import cmd, printcore, sys 
 import glob, os, time
 import sys, subprocess 

pronterface.py

 #!/usr/bin/env python
+# Licensed under the terms of GPL version 3, or, at your option, any later version.
 
 # Set up Internationalization using gettext
 # searching for installed locales on /usr/share; uses relative folder if not found (windows)

stltool.py

+# Licensed under the terms of GPL version 3, or, at your option, any later version.
 import sys, struct, math
 
 def cross(v1,v2):

stlview.py

 #!/usr/bin/python
+# Licensed under the terms of GPL version 3, or, at your option, any later version.
 import os
 import math
 import stltool

xybuttons.py

+# Licensed under the terms of GPL version 3, or, at your option, any later version.
 import wx, os, math
 from bufferedcanvas import *
 

zbuttons.py

+# Licensed under the terms of GPL version 3, or, at your option, any later version.
 import wx, os, math
 from bufferedcanvas import *
 

zscaper.py

+# Licensed under the terms of GPL version 3, or, at your option, any later version.
 import wx,math
 from stltool import *
 a=wx.App()