jsx-fragments: improve message text

Author: alexzherdev

lib/rules/jsx-fragments.js

@@ -47,7 +47,8 @@ module.exports = {
       if (!versionUtil.testReactVersion(context, '16.2.0')) {
         context.report({
           node,
-          message: 'Fragments are only supported starting from React v16.2'
+          message: 'Fragments are only supported starting from React v16.2. '
+            + 'Please disable the `react/jsx-fragments` rule or upgrade your version of React.'
         });
         return true;
       }

tests/lib/rules/jsx-fragments.js

@@ -88,13 +88,15 @@ ruleTester.run('jsx-fragments', rule, {
     parser: 'babel-eslint',
     settings: settingsOld,
     errors: [{
-      message: 'Fragments are only supported starting from React v16.2'
+      message: 'Fragments are only supported starting from React v16.2. '
+        + 'Please disable the `react/jsx-fragments` rule or upgrade your version of React.'
     }]
   }, {
     code: '<Act.Frag><Foo /></Act.Frag>',
     settings: settingsOld,
     errors: [{
-      message: 'Fragments are only supported starting from React v16.2'
+      message: 'Fragments are only supported starting from React v16.2. '
+        + 'Please disable the `react/jsx-fragments` rule or upgrade your version of React.'
     }]
   }, {
     code: '<><Foo /></>',