change load point to arelle.pyw so that Windows .exe file has name ar…

…elle.exe

and allow command line operation (if any parameters specified) or default
to GUI operation (if no parameters).  Not Mac tested yet.

arelle.pyw

@@ -0,0 +1,19 @@
+'''
+Created on Feb 19, 2011
+
+Use this module to start Arelle in windowing interactive UI or command line modes
+
+If no arguments, start in GUI mode
+
+If any argument, start in command line mode
+
+@author: Mark V Systems Limited
+(c) Copyright 2011 Mark V Systems Limited, All rights reserved.
+'''
+import sys
+from arelle import CntlrWinMain, CntlrCmdLine
+
+if len(sys.argv) == 1:  # no command line arguments
+    CntlrWinMain.main()
+else:
+    CntlrCmdLine.main()