title: TypeORM: Define relation in migration
body: <p>Hi I'm reading TypeORM docs, and trying to implement relations like showed here
  Im trying to have History model that relates to every User, so that each user has multiple history </p>
  
  <p>Im reading this &amp; using that example:</p>
  
  <p><a href="https://github.com/typeorm/typeorm/blob/master/docs/many-to-one-one-to-many-relations.md" rel="nofollow noreferrer">https://github.com/typeorm/typeorm/blob/master/docs/many-to-one-one-to-many-relations.md</a></p>
  
  <p>But after try to implement it I get column userId on History model does not exist ??</p>
  
  <p>Does anyone know what could be  the problem ?</p>
  
  <p>Im assuming I should add relation in migration file for my Model but I do not see any of that in documentation ?</p>