start some documentation work

documentation/routing.md

@@ -0,0 +1,30 @@
+# Routing
+
+Embedder utilizes **Express** for routing and serving the app. Templating is currently with **EJS**, but there's a potential future migration to **React**. **Passport** is employed for authentication.
+
+## Routes:
+
+- **/** ([index.ts](../app/routes/index.ts))
+    - `GET`: 
+        - Unauthenticated: Serve `home.ejs`
+        - Authenticated: Serve `index.ejs`
+    - `POST`: Redirect to `/`
+
+- **/login** ([auth.ts](../app/routes/auth.ts))
+    - `GET`: Serve `login.ejs`
+    - `POST` to `/login/password`: 
+        - Success: Redirect to `/`
+        - Failure: Redirect to `/login`
+
+- **/logout** ([auth.ts](../app/routes/auth.ts))
+    - `POST`: Redirect to `/`
+
+- **/gifv** ([index.ts](../app/routes/index.ts))
+    - `GET`: Serve `gifv.ejs`
+    - `POST` to `/adduser`: Redirect to `/`
+
+- **/adduser** ([adduser.ts](../app/routes/adduser.ts))
+    - `GET`: Serve `adduser.ejs`
+
+- **/sharex** ([index.ts](../app/routes/index.ts))
+    - `POST`: Response is text containing path to uploaded file