Finish documenting options in README.md

Author: christophersmith262

README.md

@@ -94,6 +94,8 @@ module.exports = {
 };
 ```
 
+------------------------------------------------------------------------
+
 #### `nameGenerator`
 
 Type: `Function`
@@ -116,6 +118,8 @@ module.exports = {
 };
 ```
 
+------------------------------------------------------------------------
+
 #### `requirePattern`
 
 Type: `String`
@@ -135,6 +139,8 @@ module.exports = {
 };
 ```
 
+------------------------------------------------------------------------
+
 #### `prepareFile`
 
 Type: `Function`
@@ -160,3 +166,35 @@ module.exports = {
   ],
 };
 ```
+
+------------------------------------------------------------------------
+
+#### `libraryEntryGenerator`
+
+Type: `DrupalLibraryEntryGenerator`
+
+Default: `DrupalLibraryEntryGenerator`
+
+Generates a flat Drupal library entry as a javascript object from a `DrupalLibraryMetadata` object.
+
+**webpack.config.js**
+
+```js
+class StaticVersionLibraryGenerator extends DrupalLibraryEntryGenerator {
+  constructor(version) {
+    this.version = version
+  }
+  
+  async versionGenerator(metadata) {
+    return this.version
+  }
+}
+
+module.exports = {
+  plugins: [
+  	new DrupalLibrariesPlugin({
+  	  libraryEntryGenerator: new StaticVersionLibraryGenerator('2.0),
+  	})
+  ],
+};
+```

lib/DrupalLibrariesPlugin.js

@@ -19,13 +19,6 @@ class DrupalLibrariesPlugin {
   constructor(opts) {
     opts = opts || {}
 
-    opts.nameGenerator = opts.nameGenerator || DrupalLibrariesPlugin.defaults.nameGenerator
-    opts.rules = opts.rules || DrupalLibrariesPlugin.defaults.rules
-    opts.libraryEntryGenerator = opts.libraryEntryGenerator || new DrupalLibraryEntryGenerator()
-    opts.requirePattern = opts.requirePattern || DrupalLibrariesPlugin.defaults.requirePattern
-
-    opts.prepareFile = opts.prepareFile || DrupalLibrariesPlugin.defaults.prepareFile
-
     if (opts.path === false) {
       opts.path = async (result, metadata) => { return [] }
     }
@@ -36,6 +29,14 @@ class DrupalLibrariesPlugin {
       }
     }
 
+    opts.nameGenerator = opts.nameGenerator || DrupalLibrariesPlugin.defaults.nameGenerator
+    opts.requirePattern = opts.requirePattern || DrupalLibrariesPlugin.defaults.requirePattern
+    opts.prepareFile = opts.prepareFile || DrupalLibrariesPlugin.defaults.prepareFile
+    opts.libraryEntryGenerator = opts.libraryEntryGenerator || new DrupalLibraryEntryGenerator()
+
+    // This is an intentionally undocumented option.
+    opts.rules = opts.rules || DrupalLibrariesPlugin.defaults.rules
+
     this.opts = opts
     this.result = null
   }