Add __main__.py to improve how to launch the bot

freqtrade/__main__.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env python3
+"""
+__main__.py for Freqtrade
+To launch Freqtrade as a module
+
+> python -m freqtrade (with Python >= 3.6)
+"""
+
+import sys
+from freqtrade import main
+
+
+if __name__ == '__main__':
+    main.set_loggers()
+    main.main(sys.argv[1:])