First effort for GUI

gui.py

+import simra
+
+# ################################################################
+# This is not working code yet, it's just here for my own future reference.
+
+def button_press(event):
+    print("clicked at ({},{})".format(event.x, event.y))
+
+def button_release(event):
+    print("Released at ({},{})".format(event.x, event.y))
+
+def main():
+    window = Tk()
+    window.title("SIMulateur de Réseau d'Automates")
+
+    canvas = Canvas(window)
+    canvas.create_rectangle(128, 64, 32, 32,
+        outline="#ff0000", fill="#aaaaaa")
+    canvas.bind("<Button-1>", button_press)
+    canvas.bind("<ButtonRelease-1>", button_release)
+    canvas.pack(fill=BOTH, expand=1)
+
+    window.mainloop()
+
+if __name__ == '__main__':
+    main()
+