update docs

src/docs/component/advanced-usage.md

@@ -44,6 +44,7 @@ If you connect to the component via a reference, you will get access to an objec
 properties:
 
 -   cm: the internal CrateManager instance that the component uses to manipulate the data;
+-   pm: the internal ProfileManager instance; makes handling profiles/schema.org classes easy;
 -   refresh: a method to tell the current entity to refresh its display;
 -   setCurrentEntity({ id }): a method to set the enity to display;
 -   setTab(tabName): a method to display the selected tab.

src/docs/component/crate-manager.md

@@ -11,7 +11,10 @@ The component has a built in RO-Crate manager that knows how to work with and ma
 based on actions within the component. As this is now available to users of the component it's worth
 noting that it can be used in your application without using the component.
 
-[API documentation.](https://describo.github.io/crate-builder-component)
+## API Documentation
+
+-   [CrateManager](https://describo.github.io/crate-builder-component/CrateManager.html)
+-   [ProfileManager](https://describo.github.io/crate-builder-component/ProfileManager.html)
 
 ## Initialisation and usage
 
@@ -49,9 +52,6 @@ for (let e of es) {
 let e = cm.addEntity({ '@id': ..., '@type': ..., ... })
 ```
 
-And much more. See the
-[API documentation for more information and examples](https://describo.github.io/crate-builder-component)
-
 ## How does it compare to ro-crate-js
 
 There is an NPM package for manipulating RO-Crates called `ro-crate-js`. `CrateManager` does the