Update dependencies and add npm-shrinkwrap.json

package.json

@@ -20,15 +20,15 @@
   },
   "dependencies": {
     "later": "^1.2.0",
-    "libxmljs": "^0.18.4",
-    "mongodb": "^2.2.24",
-    "seedrandom": "^2.4.2"
+    "libxmljs": "^0.18.7",
+    "mongodb": "^2.2.34",
+    "seedrandom": "^2.4.3"
   },
   "optionalDependencies": {
     "redis": "^2.6.5"
   },
   "devDependencies": {
-    "coffeescript": "^1.12.4"
+    "coffeescript": "^1.12.7"
   },
   "engines": {
     "node": ">=6.9.2 <9.0"