bump to v3.1.0 [publish binary]

CHANGELOG.md

 # Changelog
 
+## 3.1.0
+
+ - Support for node 3.x and 4.x
+ - Stopped producing binaries for node-webkit and 32 bit linux
+
 ## 3.0.11
 
  - Support for io.js 3.x (upgrade to Nan 2.x) @kkoopa

package.json

 {
     "name": "sqlite3",
     "description": "Asynchronous, non-blocking SQLite3 bindings",
-    "version": "3.0.11",
+    "version": "3.1.0",
     "homepage": "http://github.com/mapbox/node-sqlite3",
     "author": {
         "name": "MapBox",