Make third init argument optional in some cases

lib/node-query.js

@@ -11,10 +11,12 @@ var NodeQuery = function() {
 	 * @alias module:node-query
 	 * @param {String} drivername - The name of the database type, eg. mysql or pg
 	 * @param {Object} connObject - A connection object from the database library you are connecting with
-	 * @param {String} connLib - The name of the db connection library you are using, eg. mysql or mysql2
+	 * @param {String} [connLib] - The name of the db connection library you are using, eg. mysql or mysql2. Optional if the same as drivername
 	 * @return {queryBuilder}
 	 */
 	this.init = function (driverType, connObject, connLib) {
+		connLib = connLib || driverType;
+
 		var fs = require('fs'),
 			qb = require('./query-builder');
 

lib/query-builder.js

@@ -230,7 +230,6 @@ var QueryBuilder = function(driver, adapter) {
 			});
 		},
 		whereNull: function(field, stmt, conj) {
-			conj = conj || 'AND';
 			field = driver.quoteIdentifiers(field);
 			var item = field + ' ' + stmt;
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ci-node-query",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "description": "A query builder for node based on the one in CodeIgniter",
   "author": "Timothy J Warren <tim@timshomepage.net>",
   "engines": {

tests/adapters/mysql_test.js

@@ -17,7 +17,7 @@ var connection = mysql.createConnection(config.conn);
 
 // Set up the query builder object
 var nodeQuery = require('../../lib/node-query');
-var qb = nodeQuery.init('mysql', connection, adapterName);
+var qb = nodeQuery.init('mysql', connection);
 
 // Set up the test base
 testBase._setUp(qb, function(test, err, rows) {

tests/adapters/pg_test.js

@@ -22,7 +22,7 @@ connection.connect(function(err) {
 
 // Set up the query builder object
 var nodeQuery = require('../../lib/node-query');
-var qb = nodeQuery.init('pg', connection, adapterName);
+var qb = nodeQuery.init('pg', connection);
 
 
 // Set up the test base