Upgrade to SockJS 0.3.8.

This includes an upgrade to the underlying websocket driver, and our
base_url in /info patch.

packages/livedata/.npm/package/npm-shrinkwrap.json

@@ -1,13 +1,18 @@
 {
   "dependencies": {
     "sockjs": {
-      "version": "0.3.7",
+      "version": "0.3.8",
       "dependencies": {
         "node-uuid": {
           "version": "1.3.3"
         },
         "faye-websocket": {
-          "version": "0.4.4"
+          "version": "0.7.0",
+          "dependencies": {
+            "websocket-driver": {
+              "version": "0.3.0"
+            }
+          }
         }
       }
     },

packages/livedata/package.js

@@ -3,8 +3,7 @@ Package.describe({
   internal: true
 });
 
-Npm.depends({sockjs: "0.3.7",
-             websocket: "1.0.8"});
+Npm.depends({sockjs: "0.3.8", websocket: "1.0.8"});
 
 Package.on_use(function (api) {
   api.use(['check', 'random', 'ejson', 'json', 'underscore', 'deps', 'logging'],