Update .travis.yml

Author: coderius

.travis.yml

@@ -9,7 +9,7 @@ php:
 
 install:
   - composer self-update
-  - composer global require "fxp/composer-asset-plugin:~1.3"
+  - composer global require "fxp/composer-asset-plugin:~1.2"
   - composer install
 
 before_script:
@@ -22,4 +22,4 @@ script:
 
 after_script:
   - wget https://scrutinizer-ci.com/ocular.phar
-  - php ocular.phar code-coverage:upload --format=php-clover coverage.clover
+  - php ocular.phar code-coverage:upload --format=php-clover coverage.clover