add app.py.

app.py

+import os
+import logging
+import requests
+import argparse
+from gitee import Gitee
+
+
+def main():
+    """main function"""
+    if not os.path.exists("gitee.conf"):
+        logging.error("config file does not exist")
+        return
+    commands()
+
+def commands():
+    gitee = Gitee("gitee.conf")
+    parser = argparse.ArgumentParser(description="test argparse")
+    parser.add_argument("-O", "--organization", type=str, help="get info about an organization")
+    args = parser.parse_args()
+
+    if args.organization:
+        gitee.get_orgs_info(args.organization)
+
+main()
\ No newline at end of file