- Added depricated alias method (prefix) in QueryBuilderHandler t…

…o avoid compability issues.

- Fixed method parameter naming in `alias` method in `QueryBuilderHandler`.
- Renamed `testPrefix` to `testAlias` in `QueryBuilderBehaviorTest` class.

src/Pecee/Pixie/QueryBuilder/QueryBuilderHandler.php

@@ -133,20 +133,34 @@ public function query($sql, array $bindings = [])
     }
 
     /**
-     * Add table alias
+     * Add or change table alias
      * Example: table AS alias
      *
-     * @see QueryBuilderHandler::addAlias()
      * @param string $table
-     * @param string $prefix
+     * @param string $alias
      * @return QueryBuilderHandler
      */
-    public function alias($table, $prefix)
+    public function alias($table, $alias)
     {
-        $this->statements['tables'][$this->tablePrefix . $table] =  strtolower($prefix);
+        $this->statements['tables'][$this->tablePrefix . $table] =  strtolower($alias);
         return $this;
     }
 
+    /**
+     * Add or change table alias
+     * Example: table AS alias
+     *
+     * @deprecated This method will be removed in the near future, please use QueryBuilderHandler::alias instead.
+     * @see QueryBuilderHandler::alias
+     * @param string $table
+     * @param string $alias
+     * @return QueryBuilderHandler
+     */
+    public function prefix($table, $alias)
+    {
+        return $this->alias($table, $alias);
+    }
+
     /**
      * @param       $sql
      * @param array $bindings

tests/Pecee/Pixie/QueryBuilderBehaviorTest.php

@@ -28,7 +28,7 @@ public function testSelectFlexibility()
         );
     }
 
-    public function testPrefix()
+    public function testAlias()
     {
         $query = $this->builder->table(['table1' => 'foo1'])
             ->alias('table1', 'foo2')