backend: docs: populate initial API endpoints

backend/docs/api/v0/index.md

@@ -0,0 +1,19 @@
+# API - v0
+
+Warning: the v0 endpoints can and will change at any time!
+
+## Book search
+
+`host/api/v0/books/search`
+
+You must supply a search query of name `title`.
+
+Example query: `host/api/v0/books/search?title=turtle+in+paradise`
+
+## Author search
+
+`host/api/v0/author/search`
+
+You must supply a search query of name `name`.
+
+Example query: `host/api/v0/author/search?name=john+green`

backend/docs/index.md

@@ -1,17 +1,3 @@
-# Welcome to MkDocs
+# Backend documentation
 
-For full documentation visit [mkdocs.org](https://www.mkdocs.org).
-
-## Commands
-
-* `mkdocs new [dir-name]` - Create a new project.
-* `mkdocs serve` - Start the live-reloading docs server.
-* `mkdocs build` - Build the documentation site.
-* `mkdocs -h` - Print help message and exit.
-
-## Project layout
-
-    mkdocs.yml    # The configuration file.
-    docs/
-        index.md  # The documentation homepage.
-        ...       # Other markdown pages, images and other files.
+Use the links in the navigation bar!