Updated README.md

README.md

@@ -14,6 +14,8 @@
 [license]: https://github.com/{{cookiecutter.github_user}}/{{cookiecutter.project_name}}/blob/main/LICENSE
 [coveralls]: https://coveralls.io/github/coordt/cookie-composer?branch=master
 
+https://coordt.github.io/cookie-composer/
+
 <!-- end-badges -->
 
 Cookie composer builds on the [cookie cutter](https://github.com/cookiecutter/cookiecutter) project to generate projects based on one or more cookiecutter templates.
@@ -24,6 +26,52 @@ Cookie composer builds on the [cookie cutter](https://github.com/cookiecutter/co
 - Add new capabilities to an existing repository by applying a template
 - Apply template updates to the generated project
 
+## Introduction
+
+Cookie Cutter treats templates like sandwiches. There are templates for hamburgers, clubs, and any other kind of sandwich you can dream up. You might have options and defaults on a template, like `Hold the mustard?[False]:` or `Mustard type [dijon]:`, but those are decided by the template author. 
+
+
+<img src="https://raw.githubusercontent.com/coordt/cookie-composer/master/docsrc/_static/img/sandwiches.png" alt="Templates are treated like finished sandwiches" style="zoom:50%;" />
+
+If you look closely at the sandwiches (templates), there is usually many things in common. What if we treated the templates as compositions of other templates:
+
+<img src="https://raw.githubusercontent.com/coordt/cookie-composer/master/docsrc/_static/img/compositions.png" alt="Sandwiches as a composition of layers" style="zoom:50%;" />
+
+You now can manage several smaller and specialized templates that provide functionality. Each template's options will be specific to what that template needs.
+
+<img src="https://raw.githubusercontent.com/coordt/cookie-composer/master/docsrc/_static/img/layers.png" alt="Templates broken out as layers on a sandwich" style="zoom:50%;" />
+
+Cookie Composer uses a composition file to describe the layers required, and even override a template's default answers.
+
+```yaml
+template: bottom-bun
+context:
+  toasting_level: light
+  buttered: False
+---
+template: burger
+---
+template: cheese
+context:
+  kind: swiss
+---
+template: bacon
+context:
+  cooking_level: crispy
+---
+template: ketchup
+---
+template: mustard
+context:
+  type: yellow
+---
+template: top-bun
+context:
+  toasting_level: light
+  buttered: False
+```
+
+We have created [a repo of highly composable templates](https://github.com/coordt/cookiecomposer-templates) as examples or reference. However, Cookie Composer is designed to handle any Cookie Cutter template.
 
 ## Purpose