fix: improve error message when auto-detection fails to mention bundlers

Fixes #544

Author: mpeyper

docs/installation.md

@@ -57,8 +57,8 @@ The standard import looks like:
 import { renderHook } from '@testing-library/react-hooks'
 ```
 
-> Note: The auto detection function may not work if tests are bundles before execution (e.g. to be
-> run in a browser)
+> Note: The auto detection function may not work if tests are being bundled (e.g. to be run in a
+> browser)
 
 ### Act
 

src/__tests__/defaultRenderer.test.ts

@@ -34,7 +34,7 @@ describe('default renderer', () => {
     })
 
     const expectedMessage =
-      "Could not auto-detect a React renderer. Are you sure you've installed one of the following\n  - react-dom\n  - react-test-renderer"
+      "Could not auto-detect a React renderer. Are you sure you've installed one of the following:\n  - react-dom\n  - react-test-renderer\nIf you are using a bundler, please update you imports to use a specific renderer.  For instructions see: https://react-hooks-testing-library.com/installation#being-specific"
 
     expect(() => require('..')).toThrowError(new Error(expectedMessage))
   })

src/pure.ts

@@ -27,7 +27,7 @@ function getRenderer() {
       .join('\n')
 
     throw new Error(
-      `Could not auto-detect a React renderer. Are you sure you've installed one of the following\n${options}`
+      `Could not auto-detect a React renderer. Are you sure you've installed one of the following:\n${options}\nIf you are using a bundler, please update you imports to use a specific renderer.  For instructions see: https://react-hooks-testing-library.com/installation#being-specific`
     )
   }
 }