Added not in and not between cases

MysqliDb.php

@@ -561,27 +561,27 @@ class MysqliDb
                             foreach ($value[1] as $v)
                                 $this->_bindParam ($v);
                             break;
+                        case 'not in':
                         case 'in':
-                            $comparison = ' IN (';
+                            $comparison = ' ' . $key . ' (';
                             foreach($val as $v){
                                 $comparison .= ' ?,';
                                 $this->_bindParam ($v);
                             }
                             $comparison = rtrim($comparison, ',').' ) ';
                             break;
+                        case 'not between':
                         case 'between':
-                            $comparison = ' BETWEEN ? AND ? ';
+                            $comparison = ' ' . $key . ' ? AND ? ';
                             $this->_bindParam ($val[0]);
                             $this->_bindParam ($val[1]);
                             break;
                         default:
                             // We are using a comparison operator with only one parameter after it
                             $comparison = ' '.$key.' ? ';
-                            // Determines what data type the where column is, for binding purposes.
                             $this->_bindParam ($val);
                     }
                 } else {
-                    // Determines what data type the where column is, for binding purposes.
                     $comparison = ' = ? ';
                     $this->_bindParam ($value[1]);
                 }

readme.md

@@ -142,6 +142,7 @@ $results = $db->get('users');
 BETWEEN:
 ```php
 $db->where('id', Array('between' => Array(4, 20) ) );
+//$db->where('id', Array('not between' => Array(4, 20) ) );
 $results = $db->get('users');
 // Gives: SELECT * FROM users WHERE id BETWEEN 4 AND 20
 ```
@@ -149,6 +150,7 @@ $results = $db->get('users');
 IN:
 ```php
 $db->where('id', Array( 'in' => Array(1, 5, 27, -1, 'd') ) );
+//$db->where('id', Array( 'not in' => Array(1, 5, 27, -1, 'd') ) );
 $results = $db->get('users');
 // Gives: SELECT * FROM users WHERE id IN (1, 5, 27, -1, 'd');
 ```