stub up perf tool and implement command line argument processing

package.json

@@ -17,5 +17,6 @@
     , "winston" : "0.3.3"
     , "connect-cookie-session" : "0.0.1"
     , "mysql" : "0.9.2"
+    , "optimist" : "0.2.6"
   }
 }

performance/run.js

+#!/usr/bin/env node
+
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla BrowserID.
+ *
+ * The Initial Developer of the Original Code is Mozilla.
+ * Portions created by the Initial Developer are Copyright (C) 2011
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Lloyd Hilaiel <lloyd@hilaiel.com> 
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either the GNU General Public License Version 2 or later (the "GPL"), or
+ * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+/* This file is the main run file for the browserid load generation
+ * tool, which is capable of analysing the maximum active users that
+ * a browserid deployment can support */
+
+
+// option processing with optimist 
+var argv = require('optimist')
+.usage('Apply load to a BrowserID server.\nUsage: $0', [ "foo" ])
+.alias('h', 'help')
+.describe('h', 'display this usage message')
+.alias('m', 'max')
+.describe('m', 'maximum active users to simulate (0 == infinite)')
+.default('m', 100)
+.alias('s', 'server')
+.describe('s', 'base URL to browserid server')
+.demand('s')
+.alias('v', 'verifier')
+.describe('v', 'base URL to verifier service (default is browserid server + \'/verify\')');
+
+var args = argv.argv;
+
+if (args.h) {
+  argv.showHelp();
+  process.exit(1);
+}
+