feat: added extra quote

Author: bashleigh

README.md

@@ -1,7 +1,7 @@
 # typeorm-polymorphic
 <a href="https://www.npmjs.com/package/typeorm-polymorphic"><img src="https://img.shields.io/npm/v/typeorm-polymorphic.svg"/></a>
 <a href="https://travis-ci.org/nestjsx/typeorm-paginate"><img src="https://travis-ci.org/nestjsx/typeorm-paginate.svg?branch=master"/></a>
-  <img src="https://camo.githubusercontent.com/a34cfbf37ba6848362bf2bee0f3915c2e38b1cc1/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f5052732d77656c636f6d652d627269676874677265656e2e7376673f7374796c653d666c61742d737175617265" />
+<img src="https://camo.githubusercontent.com/a34cfbf37ba6848362bf2bee0f3915c2e38b1cc1/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f5052732d77656c636f6d652d627269676874677265656e2e7376673f7374796c653d666c61742d737175617265" />
 
 An extension package for polymorphic relationship management, declaration and repository queries for [typeorm](https://typeorm.io/)
 
@@ -13,6 +13,8 @@ An extension package for polymorphic relationship management, declaration and re
 $ yarn add typeorm-polymorphic
 ```
 
+> You'll also require `typeorm` and `reflect-metadata` if you haven't already installed these
+
 This is a concept I've put together for decorated polymorphic values with typeorm. I've taken a lot of inspiration from laravel's eloquent.
 
 This has worked for my use case however it might not for others. This is an example of how I've used it.