Rename viscm.py -> gui.py to reduce the viscm viscm viscm Swedish Chef effect

Author: njsmith

viscm/__init__.py

@@ -1,3 +1,5 @@
 # This file is part of pycam02ucs
 # Copyright (C) 2014 Nathaniel Smith <njs@pobox.com>
 # See file LICENSE.txt for license information.
+
+from .gui import viscm, viscm_editor

viscm/__main__.py

@@ -3,7 +3,6 @@
 # Copyright (C) 2015 Stefan van der Walt <stefanv@berkeley.edu>
 # See file LICENSE.txt for license information.
 
-if __name__ == "__main__":
-    import sys
-    from .viscm import main
-    main(sys.argv[1:])
+import sys
+from .gui import main
+main(sys.argv[1:])