Add state api

src/api.js

@@ -1,7 +1,11 @@
 import Axios from 'axios'
 
+const BACKEND_HOST = 'http://169.254.61.222:5000'
+
 export function getMap(x, y) {
-  return Axios.get(`http://169.254.61.222:5000/generate/${x}/${y}`).then(
-    data => data.data
-  )
+  return Axios.get(`${BACKEND_HOST}/generate/${x}/${y}`).then(data => data.data)
+}
+
+export function getState() {
+  return Axios.get(`${BACKEND_HOST}/state`).then(data => data.data)
 }