add : nPlayers added.

Author: sadrasabouri

mafia.py

@@ -1,3 +1,4 @@
+from sys import argv
 from flask import Flask, render_template, url_for
 
 app = Flask(__name__)
@@ -9,7 +10,20 @@ def index():
                             role_name="Don",
                             is_farsi=True)
 
+
+def help_me():
+    usage  = "mafia - Web Server Application For Mafia Game Playing On Local Network \n\n"
+    usage += "Usage: python3 mafia number_of_players[int]\n"
+    usage += "ex: python3 mafia 5\n"
+    usage += "this will tell mafia.py that you want a game for 5 people."
+    print(usage)
+    exit()
+
+
 if __name__ == "__main__":
+    if len(argv) < 2 or argv[1] in ['--help', 'help', '-h']:
+        help_me()
+    nPlayers = int(argv[1])
     app.run(host="0.0.0.0", \
             port=5000, \
             debug=True)