message: doc: add description of craco-cesium
diff: @@ -12,20 +12,21 @@ You can install `cesium` and `resium` from npm.
  ```sh
  npm install --save cesium resium
  +# or
  +yarn add cesium resium
  ```
  -**Note**: If you are using TypeScript, install `@types/cesium` also. Installing `@types/resium` is unnecessary as type definitions are built-in.
  +**Note**: If you are using TypeScript, install `@types/cesium` also. Installing `@types/resium` is unnecessary as type definitions for Resium are built-in.
  ## 2. Set up webpack configuration
  -To use Cesium in webpack env, preparation is a bit more necessary, because Cesium includes many asset files and uses AMD as module system.
  +To use Cesium in webpack environment, preparation is a bit more necessary, because Cesium includes many asset files and uses AMD as module system.
  -**Note**: If you are using `create-react-app`, ejecting is required.
  +There are some choices. Choose one.
  -There are two options. Choose one.
  -
  -1. [Copy whole Cesium files and load Cesium in HTML](/installation1) (easier)
  -2. [Copy only asset files and load Cesium partially](/installation2)
  +1. If you are using `create-react-app`, [`craco-cesium`](https://github.com/darwin-education/craco-cesium) is recommended. (easiest)
  +2. [Copy whole Cesium files and load Cesium in HTML](/installation1) (easier)
  +3. [Copy only asset files and load Cesium partially](/installation2)
  ## 3. Ready
  