added support

migrator/migrations/1523724426-DOWN-add-vendor-client-relationship.sql

@@ -0,0 +1,2 @@
+-- 1523724426 DOWN add-vendor-client-relationship
+drop table vendors_companies;

migrator/migrations/1523724426-UP-add-vendor-client-relationship.sql

@@ -0,0 +1,8 @@
+-- 1523724426 UP add-vendor-client-relationship
+CREATE TABLE vendors_companies (
+    id serial primary key,
+    vendor_id int references vendors(id),
+    company_id int references companies(id),
+    account_id varchar(255),
+    data text
+);