added visibility definition to method

Author: ifsnop

README.md

@@ -22,6 +22,7 @@ Out of the box, MySQLDump-PHP supports backing up table structures, the data its
 MySQLDump-PHP is the only library that supports:
 * output binary blobs as hex.
 * resolves view dependencies (using Stand-In tables).
+* output compared against original mysqldump. Linked to travis-ci testing system.
 
 ## Important
 

src/Ifsnop/Mysqldump/Mysqldump.php

@@ -546,7 +546,7 @@ private function getTableStructure($tableName)
      * @return array type column types detailed
      */
 
-    function getTableColumnTypes($tableName) {
+    private function getTableColumnTypes($tableName) {
         $columnTypes = array();
         $columns = $this->dbHandler->query(
             $this->typeAdapter->show_columns($tableName)