Add DraftIn.io to headless CMS list

src/site/headless-cms/draftin.md

@@ -0,0 +1,31 @@
+---
+title: DraftIn.io
+homepage: https://draftin.io
+twitter: draftin
+opensource: "No"
+typeofcms: "API Driven"
+supportedgenerators:
+  - All
+description: DraftIn.io is a headless CMS with a built-in AI writing assistant. Model your content, write with AI-powered suggestions, and publish to any channel through a clean API.
+images:
+  - path: /img/cms/draftin_1.png
+  - path: /img/cms/draftin_2.png
+  - path: /img/cms/draftin_3.png
+  - path: /img/cms/draftin_4.png
+---
+
+## DraftIn.io
+
+DraftIn.io is an API-first headless CMS built for people who write. Model your content once and deliver it to any front end — Next.js, Astro, or a native app — through a clean, well-documented API.
+
+### AI writing assistant
+
+The editor's AI assistant works alongside you as you write: it suggests titles, rewrites passages, and helps optimize content for SEO, so you can focus on the message instead of the mechanics.
+
+### API-first delivery
+
+DraftIn is headless — it delivers the content and leaves the presentation layer to you. There are no themes to maintain inside the CMS, and the content is available to any framework or channel that can consume the API.
+
+### Get started for free
+
+DraftIn.io offers a free plan with no credit card required. Learn more and read the API documentation at [draftin.io](https://draftin.io).