docs(schematics): clarify and refine the install schematic docs (#13267)

* Use ### header for consistency and to show up in table of contents
* Add CDK and Animations
* Add links to related guides

Author: Splaktar

guides/schematics.md

@@ -1,26 +1,31 @@
 Angular Material comes packaged with Angular CLI schematics to make
 creating Material applications easier.
 
-## Install Schematics
-Schematics come packaged with Angular Material, so once you have
-installed the npm package, they will be available via the Angular CLI.
+### Install Schematics
+Schematics are included with both `@angular/cdk` and `@angular/material`. Once you install the npm
+packages, they will be available through the Angular CLI.
 
-Using the command below will automatically install Angular Material for you
-and run the install schematic.
+Using the command below will install Angular Material, the [Component Dev Kit](https://material.angular.io/cdk) (CDK),
+and [Angular Animations](https://angular.io/guide/animations) in your project. Then it will run the
+install schematic.
 
 ```
 ng add @angular/material
 ```
 
-The install schematic will help you to quickly add Material to a new project. 
+The install schematic will help you add Material to a new project. 
 This schematic will:
 
-- Ensure project dependencies are placed in `package.json`
-- Ensure project dependencies are placed in your app module
-- Add Prebuilt or Setup Custom Theme
+- Ensure [project dependencies](./getting-started#step-1-install-angular-material-angular-cdk-and-angular-animations) are placed in `package.json`
+- Enable the [BrowserAnimationsModule](./getting-started#step-2-configure-animations) your app module
+- Add either a [prebuilt theme](./theming#using-a-pre-built-theme) or a [custom theme](./theming#defining-a-custom-theme)
 - Add Roboto fonts to your index.html
-- Apply simple CSS reset to body
-- Install and load `hammerjs` for gestures in your project.
+- Add the [Material Icon font](./getting-started#step-6-optional-add-material-icons) to your index.html
+- Add global styles to
+  - Remove margins from `body`
+  - Set `height: 100%` on `html` and `body`
+  - Make Roboto the default font of your app
+- Install and import `hammerjs` for [touch gesture support](./getting-started#step-5-gesture-support) in your project
 
 ## Generator Schematics
 In addition to the install schematic, Angular Material has three schematics it comes packaged with: