Fixed a small bug in which the short alias for \Predis\Commands\Decrement was wrongly set to 'incr' instead of 'decr' (thanks to Jeff lewwid{at}gmail.com for noticing). The test suite is flawed in this respect since it uses only the extended aliases for commands but the short ones are not checked for correctness.

lib/Predis.php

@@ -177,7 +177,7 @@ class Client {
                 'increment'           => '\Predis\Commands\Increment',
             'incrby'                  => '\Predis\Commands\IncrementBy',
                 'incrementBy'         => '\Predis\Commands\IncrementBy',
-            'incr'                    => '\Predis\Commands\Decrement',
+            'decr'                    => '\Predis\Commands\Decrement',
                 'decrement'           => '\Predis\Commands\Decrement',
             'decrby'                  => '\Predis\Commands\DecrementBy',
                 'decrementBy'         => '\Predis\Commands\DecrementBy',