Add migration guide from alpha.16 to alpha.17

docs/3.x.x/migration-guide/README.md

@@ -22,3 +22,5 @@
 - [Migration guide from alpha.14.4 to alpha.14.5](migration-guide-alpha.14.4-to-alpha.14.5.md)
 - [Migration guide from alpha.14.5 to alpha.15](migration-guide-alpha.14.5-to-alpha.15.md)
 - [Migration guide from alpha.15 to alpha.16](migration-guide-alpha.15-to-alpha.16.md)
+- [Migration guide from alpha.15 to alpha.16](migration-guide-alpha.15-to-alpha.16.md)
+- [Migration guide from alpha.16 to alpha.17](migration-guide-alpha.16-to-alpha.17.md)

docs/3.x.x/migration-guide/migration-guide-alpha.16-to-alpha.17.md

@@ -0,0 +1,65 @@
+# Migration guide from alpha.16 to alpha.17
+
+**Here are the major changes:**
+
+- Add plugin documentation
+- Add Cypress to test front-end geting started
+- Fix mongoose float/decimal
+
+**Useful links:**
+- Changelog: [https://github.com/strapi/strapi/releases/tag/v3.0.0-alpha.17](https://github.com/strapi/strapi/releases/tag/v3.0.0-alpha.17)
+- GitHub diff: [https://github.com/strapi/strapi/compare/v3.0.0-alpha.16...v3.0.0-alpha.17](https://github.com/strapi/strapi/compare/v3.0.0-alpha.16...v3.0.0-alpha.17)
+
+<br>
+
+::: note
+Feel free to [join us on Slack](http://slack.strapi.io) and ask questions about the migration process.
+:::
+
+<br>
+
+## Getting started
+
+Install Strapi `alpha.17` globally on your computer. To do so run `npm install strapi@3.0.0-alpha.17 -g`.
+
+When it's done, generate a new empty project `strapi new myNewProject` (don't pay attention to the database configuration).
+
+<br>
+
+## Update node modules
+
+Update the Strapi's dependencies version (move Strapi's dependencies to `3.0.0-alpha.17` version) of your project.
+
+Run `npm install strapi@3.0.0-alpha.17 --save` to update your strapi version.
+
+<br>
+
+## Update the Admin
+
+::: note
+If you performed updates in the Admin, you will have to manually migrate your changes.
+:::
+
+Delete your old admin folder and replace it with the new one.
+
+<br>
+
+## Update the Plugins
+
+::: note
+If you did a custom update on one of the plugins, you will have to manually migrate your update.
+:::
+
+Copy the fields and relations you had in your `/plugins/users-permissions/models/User.settings.json` file in the new one.
+
+Then, delete your old `plugins` folder and replace it with the new one.
+
+## ⚠️ Bookshelf custom file (Postgres and MySQL)
+
+If you are using `./config/functions/bookshelf.js` file to custom your bookshelf connection you will have to update your code. We change the second argument of this function.
+
+Please check this [update](https://github.com/strapi/strapi/pull/2370/files#diff-a6643c99335d5a82e1bc4c0a2590e6cb).
+
+<br>
+
+That's all, you have now upgraded to Strapi `alpha.17`.