Updated express to 2.4.3

.gitignore

 *~
 \#*\#
 .\#*
+node_modules

package.json

+{
+    "name": "browserid"
+  , "version": "0.0.1"
+  , "private": true
+  , "dependencies": {
+      "express": "2.4.3"
+    , "xml2js": "0.1.5"
+    , "sqlite": "1.0.3"
+    , "nodemailer": "0.1.18"
+    , "mustache": "0.3.1-dev"
+    , "cookie-sessions": "0.0.2"
+    , "vows": "0.5.8"
+    , "bcrypt": "0.2.3"
+    , "ejs": "0.4.3"
+  }
+}
\ No newline at end of file