Add PHPUnit to require-dev

Author: clue

.travis.yml

@@ -11,7 +11,7 @@ php:
 sudo: false
 
 install:
-  - composer install --prefer-source --no-interaction
+  - composer install --no-interaction
 
 script:
-  - phpunit --coverage-text
+  - vendor/bin/phpunit --coverage-text

README.md

@@ -43,6 +43,21 @@ $ composer require react/datagram:^1.1.1
 
 See also the [CHANGELOG](CHANGELOG.md) for details about version upgrades.
 
+## Tests
+
+To run the test suite, you first need to clone this repo and then install all
+dependencies [through Composer](http://getcomposer.org):
+
+```bash
+$ composer install
+```
+
+To run the test suite, go to the project root and run:
+
+```bash
+$ php vendor/bin/phpunit
+```
+
 ## License
 
 MIT

composer.json

@@ -21,6 +21,7 @@
         "react/promise": "~2.1|~1.2"
     },
     "require-dev": {
-        "clue/block-react": "~1.0"
+        "clue/block-react": "~1.0",
+        "phpunit/phpunit": "^4.8"
     }
 }