docs: add docs for minimal flag to store, effects, and schematics

Author: brandonroberts

projects/ngrx.io/content/guide/effects/install.md

@@ -23,13 +23,15 @@ If your project is using the Angular CLI 6+ then you can install the Effects to
 ```sh
 ng add @ngrx/effects
 ```
+
 ### Optional `ng add` flags
 
 * path - path to the module that you wish to add the import for the `EffectsModule` to.
 * flat - Indicate if a directoy is to be created to hold your effects file
 * spec - Specifies if a spec file is generated.
 * project - name of the project defined in your `angular.json` to help locating the module to add the `EffectsModule` to.
 * module - name of file containing the module that you wish to add the import for the `EffectsModule` to. Can also include the relative path to the file. For example, `src/app/app.module.ts`
+* minimal - Only provide minimal setup for the root effects setup. Only registers `EffectsModule.forRoot()` in the provided `module` with an empty array.
 * group - Group effects file within `effects` folder
 
 This command will automate the following steps:

projects/ngrx.io/content/guide/schematics/effect.md

@@ -58,6 +58,12 @@ When used with the `--module` option, it registers an effect within the `Angular
   - Type: `boolean`
   - Default: `false`
 
+Only provide minimal setup for the root effects setup. Only registers `EffectsModule.forRoot()` in the provided module with an empty array.
+
+- `--minimal`
+  - Type: `boolean`
+  - Default: `false`
+
 Specifies if effect has api success and failure actions wired up.
 
 - `--api`

projects/ngrx.io/content/guide/schematics/store.md

@@ -38,6 +38,12 @@ When used with the `--module` option, it registers the state within the `Angular
   - Type: `boolean`
   - Default: `false`
 
+Only provide minimal setup for the root state management. Only registers `StoreModule.forRoot()` in the provided module with an empty object, and default runtime checks.
+
+- `--minimal`
+  - Type: `boolean`
+  - Default: `false`
+
 Provide the folder where the state files will be created.
 
 - `--statePath`

projects/ngrx.io/content/guide/store/install.md

@@ -29,6 +29,7 @@ ng add @ngrx/store
 * path - path to the module that you wish to add the import for the `StoreModule` to.
 * project - name of the project defined in your `angular.json` to help locating the module to add the `StoreModule` to.
 * module - name of file containing the module that you wish to add the import for the `StoreModule` to. Can also include the relative path to the file. For example, `src/app/app.module.ts`;
+* minimal - flag to only provide minimal setup for the root state management. Only registers `StoreModule.forRoot()` in the provided `module` with an empty object, and default runtime checks.
 * statePath - The file path to create the state in. By default, this is `reducers`.
 * stateInterface - The type literal of the defined interface for the state. By default, this is `State`.