📚 docs: Better wording for regeneratorRuntime usage.

Author: make-github-pseudonymous-again

README.md

@@ -36,10 +36,13 @@ All methods are pure functions that do not modify their object.
 > The [parent project](https://github.com/aureooms/js-persistent) shows how
 > specialized persistent data structures can be build on top of those methods.
 
-> The code requires `regeneratorRuntime` to be defined, for instance by importing
+> :warning: The code requires `regeneratorRuntime` to be defined, for instance by importing
 > [regenerator-runtime/runtime](https://www.npmjs.com/package/regenerator-runtime).
 
+First, require the polyfill at the entry point of your application
 ```js
+require( 'regenerator-runtime/runtime' );
+// or
 import 'regenerator-runtime/runtime.js' ;
 ```
 

doc/manual/usage.md

@@ -1,7 +1,9 @@
 # Usage
 
-The code requires `regeneratorRuntime` to be defined, for instance by importing
-[regenerator-runtime/runtime](https://www.npmjs.com/package/regenerator-runtime).
+> :warning: The code requires `regeneratorRuntime` to be defined, for instance by importing
+> [regenerator-runtime/runtime](https://www.npmjs.com/package/regenerator-runtime).
+
+First, require the polyfill at the entry point of your application
 ```js
 require( 'regenerator-runtime/runtime' );
 // or