Update readme

README.md

@@ -1,4 +1,34 @@
-# Documentation
+# ngrok API client library for Ruby
+
+This library wraps the [ngrok HTTP API](https://ngrok.com/docs/api) to make it
+easier to consume in Ruby.
+
+## Installation
+
+This library is published on [Rubygems](https://rubygems.org/gems/TODO)
+
+```ruby
+gem install TODO
+```
+
+## Documentation
+
+A quickstart guide and a full API reference are included in the [ngrok Ruby API documentation](https://ruby-api.docs.ngrok.com)
+
+## Quickstart
+
+Please consult the [documentation](https://python-api.docs.ngrok.com) for additional examples.
+
+```ruby
+require 'ngrokapi/client'
+client = NgrokAPI::Client.new(api_key: '<API KEY>')
+
+# Get an instance of the api_keys client and list all API keys
+keys = client.api_keys
+keys.list
+```
+
+## Local Documentation
 
 Documentation can be generated with the command:
 
@@ -8,7 +38,7 @@ yard doc 'lib/**/*.rb'
 
 This will generate a documentation which can be viewed within the doc folder.
 
-# Specs
+## Specs
 
 Specs can be run with the command:
 
@@ -18,7 +48,7 @@ bundle exec rake
 
 This will generate a coverage report which can be viewed within the coverage folder.
 
-# Rubocop
+## Rubocop
 
 Rubocop can be run with the command: