composer: removed --dev

Author: dg

.travis.yml

@@ -22,5 +22,5 @@ after_failure:
 
 before_script:
     # Install Nette Tester & Code Checker
-    - composer install --no-interaction --dev --prefer-source
+    - composer install --no-interaction --prefer-source
     - composer create-project nette/code-checker code-checker ~2.3 --no-interaction --prefer-source

tests/bootstrap.php

@@ -4,7 +4,7 @@
 // invoked through the command: ../vendor/bin/tester .
 
 if (@!include __DIR__ . '/../vendor/autoload.php') {
-	echo 'Install Nette Tester using `composer update --dev`';
+	echo 'Install Nette Tester using `composer install`';
 	exit(1);
 }