fix

lib/KnexCrudHandler.ts

@@ -12,11 +12,13 @@ export class KnexCrudHandler extends HttpHandler implements CrudHandler {
   protected knex: Knex;
 
   public constructor (
+    knex: Knex,
     table: string,
     columns: Array<string>,
     options: KnexCrudOptions = {}
   ) {
     super ();
+    this.knex = knex;
     this.table = table;
     this.columns = columns;
     this.options = options;