Rewritten the --prefer-dist tip

wouterj · wouterj · commit a5ef0c83b8f1 · 2013-03-17T15:19:53.000+01:00
diff --git a/book/installation.rst b/book/installation.rst
@@ -66,9 +66,8 @@ Distribution:
 
 .. tip::
 
-    To download the vendor files faster and without unnecessary directories
-    (e.g. "Tests"), add the ``--prefer-dist`` option at the end of any Composer
-    command.
+    To download the vendor files faster, add the ``--prefer-dist`` option at
+    the end of any Composer command.
 
 This command may take several minutes to run as Composer download the Standard
 Distribution along with all of the vendor libraries that it needs. When it finishes,
