add login/signup action

browser/main/Stores/AuthStore.js

@@ -0,0 +1,39 @@
+/* global localStorage */
+var Reflux = require('reflux')
+var request = require('superagent')
+
+var login = require('../Actions/login')
+var register = require('../Actions/register')
+
+var AuthStore = Reflux.createStore({
+    init: function () {
+      this.listenTo(login, this.login)
+      this.listenTo(register, this.register)
+    },
+    login: function (input) {
+      request
+        .post('http://localhost:8000/auth/login')
+        .send(input)
+        .set('Accept', 'application/json')
+        .end(function (err, res) {
+          if (err) console.error(err)
+          var user = res.body.user
+          localStorage.setItem('token', res.body.token)
+          this.trigger(user)
+        }.bind(this))
+    },
+    register: function (input) {
+      request
+        .post('http://localhost:8000/auth/signup')
+        .send(input)
+        .set('Accept', 'application/json')
+        .end(function (err, res) {
+          if (err) console.error(err)
+          var user = res.body.user
+          localStorage.setItem('token', res.body.token)
+          this.trigger(user)
+        }.bind(this))
+    }
+})
+
+module.exports = AuthStore