Merge pull request nubasedev#296 from mmomtchev/readme-default-commands

add getDefaultToolbarCommands to the readme

Author: andrerpena

readme.md

@@ -91,7 +91,7 @@ The types are described below
 This allows for passing class names to each of the inner components of React-mde. Classes defined in the *classes* prop
 follow the specification of [Jed Watson's classNames project](https://github.com/JedWatson/classnames).
 - **commands?: Record<string, Command>**: An object with string properties representing keys, and a Command object as value for each key. These are custom commands. Commands are explained in more details below.
-- **toolbarCommands?: string[][]**: Array of array of strings, indicating which commands should be displayed. Each outer array is a group. Example: `[["code", "bold"], ["italic"]]`
+- **toolbarCommands?: string[][]**: Array of array of strings, indicating which commands should be displayed. Each outer array is a group. Example: `[["code", "bold"], ["italic"]]`. The default list can be obtained with `import { getDefaultToolbarCommands } from 'react-mde', getDefaultToolbarCommands()`
 - **generateMarkdownPreview: (markdown: string) => Promise<string | ReactElement>;**: Function that should return a Promise to the generated HTML or a React element for the preview. If this `prop` is falsy, then no preview is going to be generated.
 - **getIcon?: (commandName: string) => React.ReactNode }** An optional set of button content options, including an `iconProvider` to allow custom icon rendering.
 options. It is recommended to [inspect the layouts source code](https://github.com/andrerpena/react-mde/tree/master/src/components-layout) to see what options can be passed to each