add readme / add main.js for electron / add signin, register button

main.js

@@ -0,0 +1,27 @@
+var app = require('app')  // Module to control application life.
+var BrowserWindow = require('browser-window')  // Module to create native browser window.
+
+// Report crashes to our server.
+require('crash-reporter').start()
+
+// Keep a global reference of the window object, if you don't, the window will
+// be closed automatically when the javascript object is GCed.
+var mainWindow = null
+
+console.log(process.platform)
+// Quit when all windows are closed.
+app.on('window-all-closed', function () {
+  if (process.platform !== 'darwin')
+    app.quit()
+})
+app.on('ready', function () {
+  mainWindow = new BrowserWindow({width: 800, height: 600})
+
+  mainWindow.loadUrl('file://' + __dirname + '/build/index.html')
+
+  mainWindow.openDevTools()
+
+  mainWindow.on('closed', function () {
+    mainWindow = null
+  })
+})