fix(package): update react-addons-shallow-compare to version 15.6.0

Author: greenkeeper[bot]

package.json

@@ -66,7 +66,7 @@
     "moment-timezone": "0.5.13",
     "querystring": "0.2.0",
     "react": "15.5.4",
-    "react-addons-shallow-compare": "15.5.2",
+    "react-addons-shallow-compare": "15.6.0",
     "react-native": "0.42.3",
     "react-native-alphabetlistview": "github:sunnylqm/react-native-alphabetlistview#aea5d61fdd9034c7178d73ce8b2ee104da6941cc",
     "react-native-button": "1.8.2",