cache only downloaded package archives

xabbuh · xabbuh · commit f24e802aebfa · 2016-03-19T10:38:54.000+01:00
Caching metadata from Packagist does not make any sense as they likely
outdate too often.
diff --git a/.travis.yml b/.travis.yml
@@ -4,7 +4,7 @@ language: php
 
 cache:
   directories:
-    - $HOME/.composer/cache
+    - $HOME/.composer/cache/files
 
 env:
   global:
