diff --git a/export_stars/export_stars.py b/export_stars/export_stars.py
index 6a93a32..7631dee 100755
--- a/export_stars/export_stars.py
+++ b/export_stars/export_stars.py
@@ -28,16 +28,14 @@ def config_retry(backoff_factor=1.0, total=8):
     return Retry(total=total, backoff_factor=backoff_factor)
 
 
-def parse_args():
-    parser = ArgumentParser(description="export a GitHub user's starred repositorys to CSV")
-    parser.add_argument("--user")
-    parser.add_argument("--github-token")
-    return parser.parse_args()
-
-
 def main():
-    args = parse_args()
+    parser = ArgumentParser(description="export a GitHub user's starred repositories to CSV")
+    parser.add_argument("--user", dest='user')
+    parser.add_argument("--github-token", dest='token')
+    args = parser.parse_args()
     if not args.user:
+        parser.print_usage()
+        print('')
         print("Please set `--user` to a valid GitHub user name.", file=sys.stderr)
         exit(1)
 
diff --git a/readme.md b/readme.md
index 110f72c..701dd2e 100644
--- a/readme.md
+++ b/readme.md
@@ -1,5 +1,19 @@
 This script exports a GitHub user's starred repositories (URL & description) to a CSV file.
 
-Usage: `GH_USER=defunkt python3 export_stars.py > stars.csv`
+Setup:
+
+    python -m pip install -r requirements.txt
+    pip install -r requirements.txt
+
+Usage:
+
+NOTE1 Under Microsoft Windows may need to set:
+
+    set PYTHONUTF8=1
+
+NOTE2 Can use without a token BUT if there are a lot of stars need a token to avoid `github.GithubException.RateLimitExceededException`
+
+    GH_USER=defunkt python3 export_stars/export_stars.py > stars.csv
+    python export_stars/export_stars.py --user defunkt > stars.csv
 
 Thanks to the authors of [PyGitHub](https://github.com/PyGithub/PyGithub) for the slick client library.