update versions

package.json

     "eslint-plugin-react-native": "2.x.x",
     "jest": "18.x.x",
     "jest-cli": "18.x.x",
-    "react-test-renderer": "15.4.1"
+    "react-test-renderer": "15.4.1",
+    "semver": "5.x.x"
   },
   "babel": {
     "env": {

yarn.lock

   dependencies:
     commander "~2.8.1"
 
-"semver@2 || 3 || 4 || 5", semver@5.x, semver@^5.0.3, semver@^5.1.0, semver@^5.3.0, semver@~5.3.0:
+"semver@2 || 3 || 4 || 5", semver@5.x, semver@5.x.x, semver@^5.0.3, semver@^5.1.0, semver@^5.3.0, semver@~5.3.0:
   version "5.3.0"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.3.0.tgz#9b2ce5d3de02d17c6012ad326aa6b4d0cf54f94f"