added redis contrib module

sites/all/modules/contrib/dev/redis/README.testing.txt

@@ -0,0 +1,40 @@
+Redis module testing
+====================
+
+Unit tests won't cover the cache backend until the 8.x series.
+
+This won't be fixed, by design. Drupal 8.x now ships a complete cache backend
+unit tests suite which will be used when this module will be upgraded.
+
+7.x testing
+===========
+
+7.x testing will keep it to the bare minimum and will test some minor bugs such
+as admin UI or autoloading related bugs.
+
+Cleanup environment
+===================
+
+php -f scripts/run-tests.sh -- --clean
+
+Run common tests
+================
+
+
+php -f scripts/run-tests.sh -- --verbose --color \
+    --url "http://yoursite" \
+    --class "Redis_Tests_Client_UnitTestCase"
+
+Run all PhpRedis tests
+======================
+
+php -f scripts/run-tests.sh -- --verbose --color \
+    --url "http://laborange.net" \
+    --class "Redis_Tests_Cache_PhpRedisFixesUnitTestCase,Redis_Tests_Cache_PhpRedisFlushUnitTestCase,Redis_Tests_Cache_PhpRedisShardedFixesUnitTestCase,Redis_Tests_Cache_PhpRedisShardedFlushUnitTestCase,Redis_Tests_Cache_PhpRedisShardedWithPipelineFixesUnitTestCase,Redis_Tests_Lock_PhpRedisLockingUnitTestCase,Redis_Tests_Path_PhpRedisPathUnitTestCase,Redis_Tests_Queue_PhpRedisQueueUnitTestCase"
+
+Run all Predis tests
+======================
+
+php -f scripts/run-tests.sh -- --verbose --color \
+    --url "http://yoursite" \
+    --class "Redis_Tests_Cache_PredisFixesUnitTestCase,Redis_Tests_Cache_PredisFlushUnitTestCase,Redis_Tests_Cache_PredisShardedFixesUnitTestCase,Redis_Tests_Cache_PredisShardedFlushUnitTestCase,Redis_Tests_Cache_PredisShardedWithPipelineFixesUnitTestCase,Redis_Tests_Lock_PredisLockingUnitTestCase,Redis_Tests_Path_PredisPathUnitTestCase"