fix: fix version console log (#1528)

Author: erquhart

Diff for: packages/netlify-cms-core/src/bootstrap.js

@@ -20,7 +20,7 @@ function bootstrap(opts = {}) {
   /**
    * Log the version number.
    */
-  console.log(`Netlify CMS version ${process.env.NETLIFY_CMS_VERSION}`);
+  console.log(`Netlify CMS version ${NETLIFY_CMS_VERSION}`);
 
   /**
    * Get DOM element where app will mount.

Diff for: scripts/webpack.js

@@ -26,7 +26,7 @@ const rules = () => ({
 const plugins = () => {
   return {
     define: () => new webpack.DefinePlugin({
-      NETLIFY_CMS_VERSION: `${pkg.version}${isProduction ? '' : '-dev'}`,
+      NETLIFY_CMS_VERSION: JSON.stringify(`${pkg.version}${isProduction ? '' : '-dev'}`),
     }),
     ignoreEsprima: () => new webpack.IgnorePlugin(/^esprima$/, /js-yaml/),
     ignoreMomentOptionalDeps: () => new webpack.IgnorePlugin(/^\.\/locale$/, /moment$/),