added logic for showing all indexes of a table

lib/query-interface.js

@@ -152,8 +152,9 @@ module.exports = (function() {
     return queryAndEmit.call(this, sql, 'addIndex')
     return queryAndEmit.call(this, sql, 'addIndex')
   }
   }
 
 
-  QueryInterface.prototype.showIndexes = function() {
-
+  QueryInterface.prototype.showIndex = function() {
+    var sql = this.QueryGenerator.showIndexQuery(tableName, options)
+    return queryAndEmit.call(this, sql, 'showIndex')
   }
   }
 
 
   QueryInterface.prototype.removeIndex = function() {
   QueryInterface.prototype.removeIndex = function() {