title: How to insert module into product page in prestashop
body: <p>I am creating a new module in Prestashop 1.6 which displays some data on the products page in the info box. I have created a new hook in the install method of the module like this: <code>$this-&gt;registerHook('combinationDescription')</code> and created the <code>hookDisplayCombinationDescription</code> function for assigning some smarty variables and displaying them with a tpl file. 
  After installing my module the hook is registered into the database so its usable. 
  Manually I can insert code into the product.tpl file just like: <code>{hook h="hookDisplayCombinationDescription"}</code> and I think it's working, but I would like to make this step automatically when the module gets installed. How can I do that?
  My guess would be that to edit the product.tpl file from the install method of the module but it's a bit dirty method for me. Is there some other nice way to do that?</p>