docs(readme): remove cruft from generated readme

Remove `bower i` step, remove duplicated line

Author: Awk34

templates/app/README.md

@@ -14,17 +14,14 @@ This project was generated with the [Angular Full-Stack Generator](https://githu
 
 ### Developing<% var i = 1; %>
 
-<%= i++ %>. Run `npm install` to install server dependencies.
-
-<%= i++ %>. Run `bower install` to install front-end dependencies.<% if(filters.mongoose) { %>
+<%= i++ %>. Run `npm install` to install server dependencies.<% if(filters.mongoose) { %>
 
 <%= i++ %>. Run `mongod` in a separate shell to keep an instance of the MongoDB Daemon running<% } %>
 
 <%= i++ %>. Run `gulp serve` to start the development server. It should automatically open the client in your browser when ready.
 
 ## Build & development
 
-Run `gulp build` for building and `gulp serve` for preview.
 Run `gulp build` for building and `gulp serve` for preview.
 
 ## Testing