Update README to add all installation steps

Author: despo

README.md

@@ -3,45 +3,52 @@ A lightweight Rails engine that lets any model manage task lists and tasks with
 
 ![Totoro](totoro.png)
 
-## Usage
+## Installation
 
-Include Taskable in the model(s) that can have tasks
+Add to your Gemfile:
 
 ```ruby
-class Project < ApplicationRecord
-  acts_as_taskable
-end
+gem "todoro"
 ```
 
-Now, a Project can have task lists and tasks!
+And then execute:
 
 ```bash
-project = Project.create(name: "Website Redesign")
-task_list = project.create_task_list("Development Tasks")
-task = project.add_task_to_list(task_list, "Build homepage", "Implement UI components")
+$ bundle
+```
 
-puts project.tasks # Lists all tasks in all its task lists
+Or install it yourself as:
+
+```bash
+$ gem install todoro
 ```
 
-## Installation
+## Usage
 
-Add to your Gemfile:
+Generate the required migrations
 
 ```ruby
-gem "todoro"
+rails todoro:install:migrations
 ```
 
-And then execute:
+Include Taskable in the model(s) that can have tasks
 
-```bash
-$ bundle
+```ruby
+class Project < ApplicationRecord
+  acts_as_taskable
+end
 ```
 
-Or install it yourself as:
+Now, a Project can have task lists and tasks!
 
 ```bash
-$ gem install todoro
+project = Project.create(name: "Website Redesign")
+task_list = project.create_task_list("Development Tasks")
+task = project.add_task_to_list(task_list, "Build homepage", "Implement UI components")
+
+puts project.tasks # Lists all tasks in all its task lists
 ```
 
+
 ## License
 The gem is available as open source under the terms of the [MIT License](https://opensource.org/licenses/MIT).