Update PHP documentation (5.6.1)

lib/docs/filters/php/entries.rb

@@ -3,6 +3,7 @@ module Docs
     class EntriesFilter < Docs::EntriesFilter
       TYPE_BY_NAME_STARTS_WITH = {
         'ArrayObject'     => 'SPL',
+        'Collectable'     => 'pthreads',
         'Cond'            => 'pthreads',
         'CURL'            => 'cURL',
         'Date'            => 'Date/Time',

lib/docs/scrapers/php.rb

@@ -2,7 +2,7 @@ module Docs
   class Php < FileScraper
     self.name = 'PHP'
     self.type = 'php'
-    self.version = 'up to 5.6.0'
+    self.version = 'up to 5.6.1'
     self.base_url = 'http://www.php.net/manual/en/'
     self.root_path = 'index.html'
     self.initial_paths = %w(