fix(createMigrationsTable): create schema

Create schema for migrations table before creation of migrations table
if the schema not exists

Signed-off-by: Alexander Maslov <[email protected]>

Author: drakmail

index.js

@@ -238,6 +238,12 @@ var PgDriver = Base.extend({
           return this.all('SET search_path TO ' + searchPath);
         }.bind(this)
       )
+      .then(
+        function () {
+          // create schema if not exists
+          return this.all('CREATE SCHEMA IF NOT EXISTS ' + searchPath);
+        }.bind(this)
+      )
       .then(
         function () {
           return this.all(