message: docs(readme): add setTransform func
diff: @@ -22,7 +22,7 @@ React Flow is a library for building node-based graphs. You can easily implement
  - [ReactFlowProvider](#reactflowprovider)
  - [Styling](#styling)
  - [Helper Functions](#helper-functions)
  -- [Access Internal State](#access-internal-state)
  +- [Access Internal State and Actions](#access-internal-state-and-actions)
  - [Examples](#examples)
  - [Development](#development)
  - [Testing](#testing)
  @@ -156,6 +156,12 @@ Fits view port so that all nodes are visible
  `getElements = (): Elements`
  +### setTransform
  +
  +Sets position and zoom of the pane
  +
  +`setTransform = (transform: FlowTransform): void`
  +
  # Nodes
  There are three different [node types](#node-types--custom-nodes) (`default`, `input`, `output`) you can use. The node types differ in the number and types of handles. An input node has only a source handle, a default node has a source and a target and an output node has only a target handle. You create nodes by adding them to the `elements` array of the `ReactFlow` component.
  @@ -507,7 +513,7 @@ Returns all direct child nodes of the passed node
  You can use these function as seen in [this example](/example/src/Overview/index.js#L40-L41) or use your own ones.
  -# Access Internal State
  +# Access Internal State and Actions
  Under the hood React Flow uses [Easy Peasy](https://easy-peasy.now.sh/) for state handling.
  If you need to access the internal state you can use the `useStoreState` hook inside a child component of the `ReactFlow` component:
  @@ -530,6 +536,21 @@ const Flow = () => (
  );
  ```
  +You will not need this in most cases but you can also use the internal actions that are defined in the [store](/src/store/index.ts):
  +
  +```javascript
  +import React, { useEffect } from 'react';
  +import { useStoreActions } from 'react-flow-renderer'
  +
  +const TransformUpdater = ({ x, y, zoom }) => {
  + const setTransform = useStoreActions(a => a.setInitTransform);
  +
  + useEffect(() => {
  + setTransform({ x, y, k: zoom })
  + }, [x, y, zoom])
  +});
  +```
  +
  If you need more control you can wrap the `ReactFlow` component with the `ReactFlowProvider` component in order to be able to call `useStoreState` outside of the `ReactFlow` component.
  # Examples
  