Fix parsing param, update readme (wip) and requirements

main.py

@@ -24,7 +24,7 @@ def main():
 
     parser = argparse.ArgumentParser()
     parser.add_argument("itemId", nargs='?', default=None, help="Item ID to download, use 0 for root")
-    parser.add_argument("localDirectory", nargs='?', default='', help="Local path of the item")
+    parser.add_argument("localDirectory", nargs='?', default='.', help="Local path of the item")
     parser.add_argument("-y", "--yes", help="skip confirmation dialogue", action="store_true")
     args = parser.parse_args()
 
@@ -33,7 +33,7 @@ def main():
     q = queue.Queue()
 
     if args.itemId is not None:
-        local = Path('args.localDirectory')
+        local = Path(args.localDirectory)
         folder = client.folder(args.itemId).get(['name', 'id', 'size', 'modified_at', 'path_collection'])
         q.put(Job(folder, local))
     else: