minor #6572 Edited BowerPHP tip (SecondeJK)

This PR was submitted for the 3.0 branch but it was merged into the 2.3 branch instead (closes #6572).

Discussion
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Edited BowerPHP tip

Just a quite proposed change to keep us up to date: BowerPHP is now in beta, not alpha.

Commits
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029f300 Edited BowerPHP tip

Author: xabbuh

cookbook/frontend/bower.rst

@@ -25,8 +25,8 @@ it's installed correctly.
 .. tip::
 
     If you don't want to have NodeJS on your computer, you can also use
-    BowerPHP_ (an unofficial PHP port of Bower). Beware that this is still in
-    an alpha state. If you're using BowerPHP, use ``bowerphp`` instead of
+    BowerPHP_ (an unofficial PHP port of Bower). Beware that this is currently
+    in beta status. If you're using BowerPHP, use ``bowerphp`` instead of
     ``bower`` in the examples.
 
 Configuring Bower in your Project