update README.md #15

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

Author: iteman

README.md

@@ -5,7 +5,7 @@ A finite state machine
 [![Total Downloads](https://poser.pugx.org/piece/stagehand-fsm/downloads.png)](https://packagist.org/packages/piece/stagehand-fsm)
 [![Latest Stable Version](https://poser.pugx.org/piece/stagehand-fsm/v/stable.png)](https://packagist.org/packages/piece/stagehand-fsm)
 [![Latest Unstable Version](https://poser.pugx.org/piece/stagehand-fsm/v/unstable.png)](https://packagist.org/packages/piece/stagehand-fsm)
-[![Build Status](https://travis-ci.org/piece/stagehand-fsm.svg?branch=master)](https://travis-ci.org/piece/stagehand-fsm)
+[![Build Status](https://travis-ci.org/piece/stagehand-fsm.svg?branch=2.4)](https://travis-ci.org/piece/stagehand-fsm)
 
 `Stagehand_FSM` is a [finite state machine](https://en.wikipedia.org/wiki/Finite-state_machine).
 
@@ -52,16 +52,8 @@ echo $stateMachine->getCurrentState()->getStateID() . PHP_EOL; // "locked"
 
 Add the dependency to `piece/stagehand-fsm` into your `composer.json` file as the following:
 
-Stable version:
-
-```
-composer require piece/stagehand-fsm "2.3.*"
-```
-
-Development version:
-
 ```
-composer require piece/stagehand-fsm "~2.4@dev"
+composer require piece/stagehand-fsm "2.4.*"
 ```
 
 ## Support