Add blueprint (#60)

* Add blueprint

* Update content

.wordpress-org/blueprints/blueprint.json

@@ -0,0 +1,22 @@
+{
+	"$schema": "https://playground.wordpress.net/blueprint-schema.json",
+	"landingPage": "/wp-admin/post.php?post=5&action=edit",
+	"steps": [
+		{
+			"step": "login",
+			"username": "admin",
+			"password": "password"
+		},
+		{
+			"step": "installPlugin",
+			"pluginZipFile": {
+				"resource": "wordpress.org/plugins",
+				"slug": "richtext-extension"
+			}
+		},
+		{
+			"step": "runPHP",
+			"code": "<?php\ninclude 'wordpress/wp-load.php';\nwp_insert_post(array(\n'import_id' => 5,\n'post_title' => 'RichText Extension',\n'post_content' => '<!-- wp:paragraph -->\n<p>Lorem ipsum dolor sit <span class=\"rtex-highlighter-0\">amet</span>, consectetur adipiscing elit, sed do eiusmod tempor <span class=\"rtex-highlighter-1\">incididunt</span> ut labore et dolore magna <span class=\"rtex-highlighter-2\">aliqua</span>. Ut enim ad minim veniam, quis nostrud exercitation <span class=\"rtex-highlighter-3\">ullamco</span> laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in <span class=\"rtex-font-size-0\">reprehenderit</span> in voluptate velit esse <span class=\"rtex-font-size-1\">cillum</span> dolore eu fugiat nulla <span class=\"rtex-font-size-2\">pariatur</span>. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt <span class=\"rtex-font-size-3\">mollit</span> anim id est laborum.</p>\n<!-- /wp:paragraph -->',\n'post_status' => 'publish',\n'post_author' => 1\n));"
+		}
+	]
+}