Updated dependencies

package.json

@@ -6,12 +6,12 @@
     "test": "test"
   },
   "dependencies": {
-    "libxmljs": "~0.7.1",
+    "libxmljs": "~0.8.1",
-    "memcached": "~0.2.2",
+    "memcached": "~0.2.5",
-    "mongodb": "~1.2.14"
+    "mongodb": "~1.3.18"
   },
   "devDependencies": {
-    "coffee-script": "~1.6.2"
+    "coffee-script": "~1.6.3"
   },
   "scripts": {
     "prepublish": "coffee -c *.coffee",