fix(gen): expose skip-install option and improve usage docs

closes #1230

Author: kingcody

app/USAGE

@@ -1,5 +1,24 @@
 Description:
-    Creates an full-stack AngularJS + Node app
+  Creates a Full-Stack AngularJS + Node app
 
 Example:
-    yo angular-fullstack
+  yo angular-fullstack
+
+Sub Generators:
+
+  Server Side:
+    angular-fullstack:endpoint
+
+  Client Side:
+    angular-fullstack:route
+    angular-fullstack:controller
+    angular-fullstack:filter
+    angular-fullstack:directive
+    angular-fullstack:service
+    angular-fullstack:provider
+    angular-fullstack:factory
+    angular-fullstack:decorator
+
+  Deployment:
+    angular-fullstack:openshift
+    angular-fullstack:heroku

app/generator.js

@@ -13,10 +13,15 @@ export default class Generator extends Base {
 
     this.argument('name', { type: String, required: false });
 
+    this.option('skip-install', {
+      desc: 'Do not install dependencies',
+      type: Boolean,
+      defaults: false
+    });
+
     this.option('app-suffix', {
       desc: 'Allow a custom suffix to be added to the module name',
       type: String,
-      required: 'false',
       defaults: 'App'
     });
   }

readme.md

@@ -84,6 +84,21 @@ Available generators:
 ### App
 Sets up a new AngularJS + Express app, generating all the boilerplate you need to get started.
 
+Usage:
+```bash
+Usage:
+  yo angular-fullstack:app [options] [<name>]
+
+Options:
+  -h,   --help          # Print the generator's options and usage
+        --skip-cache    # Do not remember prompt answers                        Default: false
+        --skip-install  # Do not install dependencies                           Default: false
+        --app-suffix    # Allow a custom suffix to be added to the module name  Default: App
+
+Arguments:
+  name    Type: String  Required: false
+```
+
 Example:
 ```bash
 yo angular-fullstack
@@ -92,6 +107,21 @@ yo angular-fullstack
 ### Endpoint
 Generates a new API endpoint.
 
+Usage:
+```bash
+Usage:
+  yo angular-fullstack:endpoint [options] <name>
+
+Options:
+  -h,   --help               # Print the generator's options and usage
+        --skip-cache         # Do not remember prompt answers           Default: false
+        --route              # URL for the endpoint
+        --models             # Specify which model(s) to use
+        --endpointDirectory  # Parent directory for enpoints
+
+Arguments:
+  name    Type: String  Required: true
+```
 
 Example:
 ```bash