message: chore(docs): update ng-cli.md
  small readability improvements
diff: #### Installing angular-cli
  -*Note*: you can skip this part if you already have application generated by `ng-cli` and webpack
  +> _Note_: you can skip this part if you already have application generated by `ng-cli` and webpack
  ```bash
  npm i -g @angular/cli
  @@ -13,13 +13,13 @@ ng serve
  #### Adding ngx-bootstrap
  - - install `ngx-bootstrap` and `bootstrap`
  +- Install `ngx-bootstrap` and `bootstrap`
  ```bash
  npm install ngx-bootstrap bootstrap --save
  ```
  -- open `src/app/app.module.ts` and add
  +- Open `src/app/app.module.ts` and add:
  ```typescript
  import { AlertModule } from 'ngx-bootstrap';
  @@ -32,7 +32,7 @@ import { AlertModule } from 'ngx-bootstrap';
  })
  ```
  -- open `.angular-cli.json` and insert a new entry into the styles array
  +- Open `.angular-cli.json` and insert a new entry into the styles array:
  ```json
  "styles": [
  @@ -41,7 +41,8 @@ import { AlertModule } from 'ngx-bootstrap';
  ],
  ```
  -- open `src/app/app.component.html` and add
  -```
  +- Open `src/app/app.component.html` and add:
  +
  +```html
  <alert type="success">hello</alert>
  ```
  