Update README.md (#63622)

Author: Stacey Gammon

src/plugins/embeddable/README.md

@@ -1,39 +1,25 @@
-# The Embeddable API V2
+# Embeddables
 
-The Embeddable API's main goal is to have documented and standardized ways to share and exchange information and functionality across applications and plugins.
+Embeddables are re-usable widgets that can be rendered in any environment or plugin.  Developers can embed them directly in their plugin.  End users can dynamically add them to any embeddable _containers_.
 
-There are three main pieces of this infrastructure:
- - Embeddables & Containers
- - Actions
- - Triggers
+## Embeddable containers
 
-## Embeddables & Containers
+Containers are a special type of embeddable that can contain nested embeddables. Embeddables can be dynamically added to embeddable _containers_. Currently only dashboard uses this interface.
 
-Embeddables are isolated, serializable, renderable widgets. A developer can hard code an embeddable inside their
-application, or they can use some built in actions to allow users to dynamically add them to *containers*.
-
-Containers are a special type of embeddable that can contain nested embeddables.
-
-## Actions
-
-Actions are pluggable pieces of functionality exposed to the user that take an embeddable as context, plus an optional action context.
-
-## Triggers
-
-Triggers are the way actions are connected to a user action. We ship with two default triggers, `CONTEXT_MENU_TRIGGER` and `APPLY_FILTER`.
-
-Actions attached to the `CONTEXT_MENU_TRIGGER` will be displayed in supported embeddables context menu to the user. Actions attached to the `APPLY_FILTER` trigger will show up when any embeddable emits this trigger.
+## Examples
 
-A developer can register new triggers that their embeddables, or external components, can emit (as long as they have an embeddable to pass along as context).
+Many example embeddables are implemented and registered [here](https://github.com/elastic/kibana/tree/master/examples/embeddable_examples). They can be played around with and explored [in the Embeddable Explorer example plugin](https://github.com/elastic/kibana/tree/master/examples/embeddable_explorer). Just run kibana with
 
-## Examples
+```
+yarn start --run-examples
+```
 
-Many examples can be viewed in the functionally tested `kbn_tp_embeddable_explorer` plugin, as well as the jest tested classes inside the `embeddable_api/public/test_samples` folder.
+and navigate to the Embeddable explorer app.
 
 ## Testing
 
 Run unit tests
 
 ```shell
-node scripts/jest embeddable_api
+node scripts/jest embeddable
 ```