BugFix: Automatically opt-out after timeout (#47)

Author: omefire

lib/index.js

@@ -158,7 +158,7 @@ Insight.prototype.askPermission = function (msg, cb) {
 		// automatically opt out
 		this.optOut = true;
 		cb(null, false);
-	}, this._permissionTimeout * 1000);
+	}.bind(this), this._permissionTimeout * 1000);
 };
 
 module.exports = Insight;