Add argument parse and base directory

Server/MarkdownPreviewer/__init__.py

@@ -4,5 +4,12 @@ import argparse
 import sys
 
 def launcher():
-    print(sys.argv)
+    parser = argparse.ArgumentParser(
-    asyncio.run(main())
+            prog="MarkdownPreviewer",
+            description="Server to allow live rendering of markdown")
+
+    parser.add_argument('--base', help="base directoy of the server")
+
+    result = parser.parse_args()
+
+    asyncio.run(main(result.base))