Added Database.close() and Database.disconnect() methods to allow gra…

…ceful closing of DB connections

lib/Database.js

@@ -58,6 +58,12 @@ Database.prototype.connect = function (cb) {
 	});
 };
 
+Database.prototype.close = Database.prototype.disconnect = function() {
+	if(!this.connection) return;
+	this.connection.close();
+	this.connection = null;
+ };
+
 Database.prototype.express = function() {
 	/// <summary>Creates an Express Middleware which will make this database wrapper available through the req.db property</summary>
 	/// <returns type="Function"/>