update README.md #16

* change the branch of the build status
* change the `Installation` section

README.md

@@ -7,7 +7,7 @@ A BPMN 2.0 compliant workflow engine for PHP
 [![Total Downloads](https://poser.pugx.org/phpmentors/workflower/downloads)](https://packagist.org/packages/phpmentors/workflower)
 [![Latest Stable Version](https://poser.pugx.org/phpmentors/workflower/v/stable)](https://packagist.org/packages/phpmentors/workflower)
 [![Latest Unstable Version](https://poser.pugx.org/phpmentors/workflower/v/unstable)](https://packagist.org/packages/phpmentors/workflower)
-[![Build Status](https://travis-ci.org/phpmentors-jp/workflower.svg?branch=master)](https://travis-ci.org/phpmentors-jp/workflower)
+[![Build Status](https://travis-ci.org/phpmentors-jp/workflower.svg?branch=1.2)](https://travis-ci.org/phpmentors-jp/workflower)
 
 ## Features
 
@@ -39,16 +39,8 @@ A BPMN 2.0 compliant workflow engine for PHP
 
 Add the dependency to `phpmentors/workflower` into your `composer.json` file as the following:
 
-**Stable version:**
-
-```
-composer require phpmentors/workflower "1.1.*"
-```
-
-**Development version:**
-
 ```
-composer require phpmentors/workflower "~1.2@dev"
+composer require phpmentors/workflower "1.2.*"
 ```
 
 ## Support