Use latest version for getting location info

Previous version was returning incorrect location data. I verified that using newer version gives correct results.

package.json

@@ -16,7 +16,7 @@
     "d3": "3.5.6",
     "debug": "2.2.0",
     "express": "4.13.3",
-    "geoip-lite": "1.1.6",
+    "geoip-lite": "1.2.1",
     "grunt": "^0.4.5",
     "grunt-contrib-clean": "^0.6.0",
     "grunt-contrib-concat": "^0.5.1",