Add link to github in rendered docs

Guardfile

@@ -2,10 +2,10 @@ require 'asciidoctor'
 require 'erb'
 require './src/main/ruby/readme.rb'
 
-options = {:mkdirs => true, :safe => :unsafe, :attributes => 'linkcss'}
+options = {:mkdirs => true, :safe => :unsafe, :attributes => ['linkcss', 'allow-uri-read']}
 
 guard 'shell' do
-  watch(/^src\/[A-Za-z].*\.adoc$/) {|m|
+  watch(/^src\/[A-Z-a-z][^#]*\.adoc$/) {|m|
     SpringCloud::Build.render_file('src/main/asciidoc/README.adoc', :to_file => './README.adoc')
     Asciidoctor.render_file('src/main/asciidoc/spring-cloud-cli.adoc', options.merge(:to_dir => 'target/generated-docs'))
   }

docs/src/main/asciidoc/install.adoc

@@ -20,8 +20,6 @@ $ mvn install
 $ spring install org.springframework.cloud:spring-cloud-cli:1.0.0.BUILD-SNAPSHOT
 ```
 
-=== Encryption and Decryption
-
 IMPORTANT: **Prerequisites:** to use the encryption and decryption features
 you need the full-strength JCE installed in your JVM (it's not there by default).
 You can download the "Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files"

docs/src/main/asciidoc/intro.adoc

@@ -1,3 +1,5 @@
-Spring Boot command line features for
-https://github.com/spring-cloud[Spring Cloud].
+Spring Boot CLI provides http://projects.spring.io/spring-boot[Spring Boot] command line features for
+https://github.com/spring-cloud[Spring Cloud]. You can write Groovy scripts to run Spring Cloud component applications
+(e.g. `@EnableEurekaServer`). You can also easily do things like encryption and decryption to support Spring Cloud
+Config clients with secret configuration values.
 

docs/src/main/asciidoc/spring-cloud-cli.adoc

@@ -1,7 +1,71 @@
 = Spring Boot Cloud CLI
+:github: https://github.com/spring-cloud/spring-cloud-cli
+:githubmaster: {github}/tree/master
+:docslink: {githubmaster}/docs/src/main/asciidoc
 
 include::intro.adoc[]
 
+include::https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/docs/src/main/asciidoc/contributing-docs.adoc[]
+
 == Installation
 
 include::install.adoc[]
+
+== Writing Groovy Scripts and Running Applications
+
+Spring Cloud CLI has support for most of the Spring Cloud declarative
+features, such as the `@Enable*` class of annotations. For example,
+here is a fully functional Eureka server
+
+.app.groovy
+[source,groovy,indent=0]
+----
+@EnableEurekaServer
+class Eureka {}
+----
+
+which you can run from the command line like this
+
+----
+$ spring run app.groovy
+----
+
+To include additional dependencies, often it suffices just to add the
+appropriate feature-enabling annotation, e.g. `@EnableConfigServer`,
+`@EnableOAuth2Sso` or `@EnableEurekaClient`. To manually include a
+dependency you can use a `@Grab` with the special "Spring Boot" short
+style artifact co-ordinates, i.e. with just the artifact ID (no need
+for group or version information), e.g. to set up a client app to
+listen on AMQP for management events from the Spring CLoud Bus:
+
+.app.groovy
+[source,groovy,indent=0]
+----
+@Grab('spring-cloud-starter-bus-amqp')
+@RestController
+class Service {
+  @RequestMapping('/')
+  def home() { [message: 'Hello'] }
+}
+----
+
+== Encryption and Decryption
+
+The Spring Cloud CLI comes with an "encrypt" and a "decrypt"
+command. Both accept arguments in the same form with a key specified
+as a mandatory "--key", e.g.
+
+----
+$ spring encrypt mysecret --key foo
+682bc583f4641835fa2db009355293665d2647dade3375c0ee201de2a49f7bda
+$ spring decrypt --key foo 682bc583f4641835fa2db009355293665d2647dade3375c0ee201de2a49f7bda
+mysecret
+----
+
+To use a key in a file (e.g. an RSA public key for encyption) prepend
+the key value with "@" and provide the file path, e.g.
+
+----
+$ spring encrypt mysecret --key @${HOME}/.ssh/id_rsa.pub
+AQAjPgt3eFZQXwt8tsHAVv/QHiY5sI2dRcR+...
+----