Add expectations files for skimage.

expectations/skimage/base-android-nexus-s.json

Index: expectations/skimage/base-android-nexus-s.json
diff --git a/expectations/skimage/base-android-xoom.json b/expectations/skimage/base-android-nexus-s.json
similarity index 95%
copy from expectations/skimage/base-android-xoom.json
copy to expectations/skimage/base-android-nexus-s.json
index cb7d6d71da5ec76f913bd16e7adc4895c9504ef0..59e348e9e5d5bbe461694d3fc754eafe29beff00 100644
--- a/expectations/skimage/base-android-xoom.json
+++ b/expectations/skimage/base-android-nexus-s.json
@@ -56,9 +56,9 @@
       },
       "desk_yahoonews_0.jpg" : {
          "allowed-digests" : [
-            [ "bitmap-64bitMD5", 15513164475782874663 ]
+            [ "bitmap-64bitMD5", 11660520904814991699 ]
          ],
-         "ignore-failure" : true
+         "ignore-failure" : false
       },
       "kokteylogo.png" : {
          "allowed-digests" : [
@@ -134,9 +134,9 @@
       },
       "tabl_mozilla_0.jpg" : {
          "allowed-digests" : [
-            [ "bitmap-64bitMD5", 13794277939360474741 ]
+            [ "bitmap-64bitMD5", 12021873154910819088 ]
          ],
-         "ignore-failure" : true
+         "ignore-failure" : false
       }
    }
 }