Update post installation instructions and README

Issues
------
- Closes #37

Author: stevepolitodesign

README.md

@@ -1,10 +1,9 @@
-# RailsMvpAuthentication
-Short description and motivation.
+# 🔐 Rails MVP Authentication
 
-## Usage
-How to use my plugin.
+An authentication generator for Rails 7. Based on the [step-by-step guide on how to build your own authentication system in Rails from scratch](https://github.com/stevepolitodesign/rails-authentication-from-scratch).
+
+## 🚀 Installation
 
-## Installation
 Add this line to your application's Gemfile:
 
 ```ruby
@@ -13,16 +12,39 @@ gem "rails_mvp_authentication"
 
 And then execute:
 ```bash
-$ bundle
+bundle
 ```
 
 Or install it yourself as:
 ```bash
-$ gem install rails_mvp_authentication
+gem install rails_mvp_authentication
+```
+
+Then run the installation command:
+```bash
+rails g rails_mvp_authentication:install
+```
+
+Once installed make follow these steps:
+
+1. Run `bundle install` to install [bcrypt](https://rubygems.org/gems/bcrypt/)
+2. Run `rails db:migrate` to add the `users` and `active_sessions` tables
+3. Add a root path in `config/routes.rb`
+4. Ensure you have flash messages in `app/views/layouts/application.html.erb`
+
+```html+erb
+<p class="notice"><%= notice %></p>
+<p class="alert"><%= alert %></p>
 ```
 
-## Contributing
-Contribution directions go here.
+## 🙏 Contributing
+
+If you'd like to open a PR please make sure the following things pass:
+
+```ruby
+bin/rails test
+bundle exec standardrb
+```
+## 📜 License
 
-## License
-The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).
+The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).

lib/generators/rails_mvp_authentication/templates/README

@@ -2,6 +2,12 @@
 
 Next steps 👇
 
-🏗  Run bundle install
-💿  Run rails db:migrate
-🔗  Add a root path in config/routes.rb
+1️⃣  Run bundle install
+2️⃣  Run rails db:migrate
+3️⃣  Add a root path in config/routes.rb
+4️⃣  Ensure you have flash messages in app/views/layouts/application.html.erb.
+
+    <p class="notice"><%= notice %></p>
+    <p class="alert"><%= alert %></p>
+
+=========================================