Add RC versions to RN dependencies

Fixes #42

Author: davidLeonardi

package.json

@@ -28,6 +28,7 @@
   "homepage": "https://github.com/MikaelCarpenter/gb-native-router",
   "dependencies": {},
   "peerDependencies": {
-    "react-native": ">=0.12.0"
+        "react-native": ">=0.12.0 || 0.5.0-rc1 || 0.6.0-rc || 0.7.0-rc || 0.7.0-rc.2 || 0.8.0-rc || 0.8.0-rc.2 || 0.9.0-rc || 0.10.0-rc || 0.11.0-rc || 0.12.0-rc || 0.13.0-rc || 0.14.0-rc || 0.15.0-rc || 0.16.0-rc"
+
   }
 }