feat(docs): Document dynamic routes (react-boilerplate#804)

docs/js/routing.md

@@ -87,4 +87,78 @@ For example, if you have a route called `about` at `/about` and want to make a c
 }
 ```
 
+## Dynamic routes
+
+To go to a dynamic route such as 'post/:slug' eg 'post/cool-new-post', firstly add the route to your `routes.js`, as per documentation:
+
+```
+path: '/posts/:slug',
+name: 'post',
+getComponent(nextState, cb) {
+ const importModules = Promise.all([
+   System.import('containers/Post/reducer'),
+   System.import('containers/Post/sagas'),
+   System.import('containers/Post'),
+ ]);
+
+ const renderRoute = loadModule(cb);
+
+ importModules.then(([reducer, sagas, component]) => {
+   injectReducer('post', reducer.default);
+   injectSagas(sagas.default);
+   renderRoute(component);
+ });
+
+ importModules.catch(errorLoading);
+},
+```
+
+###Container:
+
+```
+<Link to={`/posts/${post.slug}`} key={post._id}>
+```
+
+Clickable link with payload (you could use push if needed).
+
+###Action:
+
+```
+export function getPost(slug) {
+  return {
+    type: LOAD_POST,
+    slug,
+  };
+}
+
+export function postLoaded(post) {
+  return {
+    type: LOAD_POST_SUCCESS,
+    podcast,
+  };
+}
+```
+
+###Saga:
+
+```
+const { slug } = yield take(LOAD_POST);
+yield call(getXhrPodcast, slug);
+
+export function* getXhrPodcast(slug) {
+  const requestURL = `http://your.api.com/api/posts/${slug}`;
+  const post = yield call(request, requestURL);
+  if (!post.err) {
+    yield put(postLoaded(post));
+  } else {
+    yield put(postLoadingError(post.err));
+  }
+}
+```
+
+Wait (`take`) for the LOAD_POST constant, which contains the slug payload from the `getPost()` function in actions.js. 
+
+When the action is fired then dispatch the `getXhrPodcast()` function to get the reponse from your api. On success dispatch the `postLoaded()` action (`yield put`) which sends back the reponse and can be added into the reducer state.
+
+
 You can read more on [`react-router`'s documentation](https://github.com/reactjs/react-router/blob/master/docs/API.md#props-3).