Relay modern example fixes (#4120)

* Fix with-relay-modern example

Starting with react-relay 1.5.0 the schema canno't be in the same dir as
the src. This can be fixed by excluding the schema dir. Globs should
also be inside quotation marks, to avoid non-deterministic behavior of
different shells.

* Add missing key on BlogPosts

examples/with-relay-modern/components/BlogPosts.js

@@ -7,7 +7,7 @@ const BlogPosts = props => {
     <div>
       <h1>Blog posts</h1>
       {props.viewer.allBlogPosts.edges.map(({ node }) =>
-        <BlogPostPreview post={node} />
+        <BlogPostPreview key={node.id}post={node} />
       )}
     </div>
   )
@@ -20,6 +20,7 @@ export default createFragmentContainer(BlogPosts, {
                 edges {
                     node {
                         ...BlogPostPreview_post
+                        id
                     }
                 }
             }

examples/with-relay-modern/package.json

@@ -7,7 +7,7 @@
     "dev": "next",
     "build": "next build",
     "start": "next start",
-    "relay": "relay-compiler --src ./ --exclude **/.next/** **/node_modules/** **/test/**  **/__generated__/** --schema ./schema/schema.graphql",
+    "relay": "relay-compiler --src ./ --exclude '**/.next/**' '**/node_modules/**' '**/test/**'  '**/__generated__/**' --exclude './schema/**' --schema ./schema/schema.graphql",
     "schema": "graphql get-schema dev"
   },
   "author": "",
@@ -19,12 +19,12 @@
     "next": "latest",
     "react": "^16.2.0",
     "react-dom": "^16.2.0",
-    "react-relay": "^1.4.1"
+    "react-relay": "^1.5.0"
   },
   "devDependencies": {
-    "graphql-cli": "^1.0.0-beta.4",
     "babel-plugin-relay": "^1.4.1",
     "graphcool": "^1.2.1",
-    "relay-compiler": "^1.4.1"
+    "graphql-cli": "^1.0.0-beta.4",
+    "relay-compiler": "^1.5.0"
   }
 }