Document the choices config option

Author: chaoticbear

README.md

@@ -58,6 +58,7 @@ const atomicGenerator =
   require("@a9g/plop-generator-react-atomic-component").default;
 
 const defaultConfig = {
+  choices: ["Atoms", "Molecules", "Organisms", "Templates", "Pages"],
   createIndex: true,
   functional: true,
   basePath: "src/ui/components",
@@ -103,6 +104,7 @@ src
 
 ```typescript
 export interface GeneratorConfig {
+  choices: string[]; //modify the default atomic naming choices
   createIndex: boolean; //create an index file
   functional: boolean; //should the template be functional or class based?
   basePath: string; //where do you want to store the generated files