Add README to cli

spring-boot-cli/README.md

 # Spring Boot - CLI
 
-> We are currently still working on documentation for Spring Boot. Please check back
-> in the future.
+## Installing the CLI
+
\ No newline at end of file
+You need [Java SDK v1.6](http://www.java.com) or higher to run the command line tool
+(there are even some issues with the `1.7.0_25` build of openjdk, so stick to earlier
+builds or use `1.6` for preference). You should check your current Java installation
+before you begin:
+
+	$ java -version
+
+### Manual installation
+You can download the Spring CLI distribution from the Spring software repository:
+
+* [spring-boot-cli-0.5.0.M4-bin.zip](http://repo.spring.io/milestone/org/springframework/boot/spring-boot-cli/0.5.0.M4/spring-boot-cli-0.5.0.M4-bin.zip)
+* [spring-boot-cli-0.5.0.M4-bin.tar.gz](http://repo.spring.io/milestone/org/springframework/boot/spring-boot-cli/0.5.0.M4/spring-boot-cli-0.5.0.M4-bin.tar.gz)
+
+Cutting edge [snapshot distributions](http://repo.spring.io/snapshot/org/springframework/boot/spring-boot-cli/)
+are also available.
+
+Once downloaded, follow the
+[INSTALL](spring-boot-cli/src/main/content/INSTALL.txt) instructions
+from the unpacked archive. In summary: there is a `spring` script
+(`spring.bat` for Windows) in a `bin/` directory in the `.zip` file,
+or alternatively you can use `java -jar` with the `.jar` file (the
+script helps you to be sure that the classpath is set correctly).
+
+### Installation with GVM
+
+GVM (the Groovy Environment Manager) can be used for managing multiple
+versions of verious Groovy and Java binary packages, including Groovy
+itself and the Spring Boot CLI. Get `gvm` from
+[the gvm home page](http://gvmtool.net) and install Spring Boot with
+
+    $ gvm install springboot
+    $ spring --version
+    Spring Boot v0.5.0.M4
+    
+> **Note:** If you are developing features for the CLI and want easy access to the version you just built, follow these extra instructions.
+
+    $ gvm install springboot dev /path/to/spring-boot/spring-boot-cli/target/spring-boot-cli-0.5.0.BUILD-SNAPSHOT-bin/spring-0.5.0.BUILD-SNAPSHOT/
+   	$ gvm use springboot dev
+   	$ spring --version
+    Spring CLI v0.5.0.BUILD-SNAPSHOT
+   	
+This will install a local instance of `spring` called the `dev` instance inside your gvm repository. It points at your target build location, so every time you rebuild Spring Boot, `spring` will be up-to-date.
+
+You can see it by doing this:
+
+    $ gvm ls springboot
+
+```
+================================================================================
+Available Springboot Versions
+================================================================================
+ > + dev                                                                           
+   * 0.5.0.M4                                                                      
+
+================================================================================
++ - local version
+* - installed
+> - currently in use
+================================================================================
+```
+
+### OSX Homebrew installation
+If you are on a Mac and using [homebrew](http://brew.sh/), all you need to do to install
+the Spring Boot CLI is:
+
+```
+$ brew install http://repo.spring.io/install/spring-boot-cli.rb
+```
+
+Homebrew will install `spring` to `/usr/local/bin`. Now you can jump right to a
+[quick start example](#quick-start-script-example).
+
+> **Note:** If you don't see the formula, you're installation of brew might be
+> out-of-date. Just execute `brew update` and try again.
+
+### Quick start script example
+Here's a really simple web application. Create a file called `app.groovy`:
+
+```groovy
+@Controller
+class ThisWillActuallyRun {
+
+	@RequestMapping("/")
+	@ResponseBody
+	String home() {
+		return "Hello World!"
+	}
+
+}
+```
+
+Then run it from a shell:
+
+```
+$ spring run app.groovy
+```
+
+> **Note:** It will take some time when you first run the application as dependencies
+> are downloaded, subsequent runs will be much quicker.
+
+Open [http://localhost:8080](http://localhost:8080) in your favorite web browser and you
+should see  the following output:
+> Hello World!
+
+## Testing Your Code
+
+The Spring Boot CLI has a `test` command. Example usage:
+
+```
+$ spring test app.groovy tests.groovy
+Total: 1, Success: 1, : Failures: 0
+Passed? true
+```
+
+Where `tests.groovy` contains JUnit `@Test` methods or Spock
+`Specification` classes. All the common framework annotations and
+static methods should be available to you without having to import
+them. Example with JUnit (for the above application):
+
+```groovy
+class ApplicationTests {
+    @Test
+    void homeSaysHello() {
+        assertEquals("Hello World", new ThisWillActuallyRun().home())
+    }
+}
+```
+
+You can add more tests by adding additional
+files, or you might prefer to put them in a special directory.
+
+## Applications with Multiple Source Files
+
+You can use shell globbing to pick up multiple files in a single
+directory, e.g.
+
+```
+$ spring run *.groovy
+```
+
+and this enables you to easily segregate your test or spec code from
+the main application code, if that's what you prefer, e.g.
+
+```
+$ spring test app/*.groovy test/*.groovy
+```
+
+## Commandline Completion
+
+Spring Boot CLI ships with a script that provides command completion
+in a standard bash-like shell. You can source the script (also named
+`spring`) in any shell, or put it in your personal or system-wide bash
+completion initialization.  On a Debian system the system-wide scripts
+are in `/etc/bash_completion.d` and all scripts in that directory are
+executed in a new shell.  To run the script manually, e.g. if you have
+installed using GVM
+
+```
+$ . ~/.gvm/springboot/current/bash_completion.d/spring
+$ spring <HIT TAB HERE>
+clean    -d       debug    help     run      test     version
+```