Moved hamburger logic to store & auto hide on route change

src/modules/hamburger.js

@@ -0,0 +1,19 @@
+export default {
+  namespaced: true,
+  state: {
+    open: false
+  },
+  getters: {
+    isOpen: state => state.open
+  },
+  mutations: {
+    SET_OPEN: state => (state.open = true),
+    SET_CLOSE: state => (state.open = false),
+    TOGGLE: state => (state.open = !state.open)
+  },
+  actions: {
+    open: ({ commit }) => commit("SET_OPEN"),
+    close: ({ commit }) => commit("SET_CLOSE"),
+    toggle: ({ commit }) => commit("TOGGLE")
+  }
+};