Update effects sections to latest API (#187)

They have to call done!

examples/sse/client.js

@@ -40,8 +40,14 @@ function createModel () {
       }
     },
     effects: {
-      close: () => stream.close(),
+      close: (data, state, send, done) => {
-      error: (data, state) => console.error(`error: ${data.payload}`)
+        stream.close()
+        done()
+      },
+      error: (data, state, send, done) => {
+        console.error(`error: ${data.payload}`
+        done()
+      }
     }
   }
 }

examples/title/client.js

@@ -11,7 +11,10 @@ app.model({
     update: (data, state) => ({ title: data.payload })
   },
   effects: {
-    update: (data, state, send) => (document.title = data.payload)
+    update: (data, state, send, done) => {
+      document.title = data.payload
+      done()
+    }
   }
 })