Feature: Add doc for API support

docs/src/api.md

@@ -0,0 +1,30 @@
+# API Support
+
+Pinry support API accessing via token so that you could write your own client or import any pin format to your instance.
+
+# Get Token
+Just go to `My -> Profile` page to get the token.
+
+![token-accessing](./imgs/screenshots/token-access.png)
+
+# Access API via Token
+
+Here is an example for curl to access `user-profile` API:
+
+    curl -X GET http://192.168.1.101:8080/api/v2/profile/users/ -H 'Authorization: Token fa3b0ed2b8a87c81323688c288642288c9570aca'
+
+You will get response like this:
+
+    [
+        {
+        "username": "winkidney",
+        "token": "fa3b0ed2b8a87c81323688c288642288c9570aca",
+        "email": "winkidney@gmail.com",
+        "gravatar": "0d7161ac663cdb21108502cd4051149c",
+        "resource_link": "http://localhost:8000/api/v2/profile/users/1/"
+        }
+    ]
+
+
+# API reference
+Just use the interactive API interface by DRF or follow the file [api.js](https://github.com/pinry/pinry/blob/master/pinry-spa/src/components/api.js)

mkdocs.yml

@@ -19,6 +19,7 @@ nav:
   - Theories: 'theories.md'
   - Install with Docker: 'install-with-docker.md'
   - Development: 'development.md'
+  - API support: 'api.md'
   - Plugin System: 'plugin-system.md'
   - Upgrade Guide: 'upgrade-guide.md'
   - Docs: 'docs.md'