CLI: Refactor printing of version a bit

Summary:
Small renaming after facebook#11464

**Test plan**

Ran 'react-native init' and 'react-native -v' inside and outside a RN project.

Reviewed By: mkonicek

Differential Revision:
D4339481
Ninja: OSS only

fbshipit-source-id: b23daaee55907761ed0820a707f36ad70d1f1d09

react-native-cli/index.js

@@ -74,7 +74,10 @@ var REACT_NATIVE_PACKAGE_JSON_PATH = function() {
     'package.json'
   );
 };
-checkForVersionArgument(options);
+
+if (options._.length === 0 && (options.v || options.version)) {
+  printVersionsAndExit(REACT_NATIVE_PACKAGE_JSON_PATH());
+}
 
 // Use Yarn if available, it's much faster than the npm client.
 // Return the version of yarn installed on the system, null if yarn is not available.
@@ -315,14 +318,12 @@ function checkNodeVersion() {
   }
 }
 
-function checkForVersionArgument(options) {
-  if (options._.length === 0 && (options.v || options.version)) {
-    console.log('react-native-cli: ' + require('./package.json').version);
-    try {
-      console.log('react-native: ' + require(REACT_NATIVE_PACKAGE_JSON_PATH()).version);
-    } catch (e) {
-      console.log('react-native: n/a - not inside a React Native project directory');
-    }
-    process.exit();
+function printVersionsAndExit(reactNativePackageJsonPath) {
+  console.log('react-native-cli: ' + require('./package.json').version);
+  try {
+    console.log('react-native: ' + require(reactNativePackageJsonPath).version);
+  } catch (e) {
+    console.log('react-native: n/a - not inside a React Native project directory');
   }
+  process.exit();
 }

react-native-cli/package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-native-cli",
-  "version": "2.0.0",
+  "version": "2.0.1",
   "license": "BSD-3-Clause",
   "description": "The React Native CLI tools",
   "main": "index.js",