upgrade client and increase tests stablity (#615)

Author: embbnux

package.json

@@ -5,7 +5,7 @@
   "main": "index.js",
   "scripts": {
     "test": "yarn test:jest",
-    "test:jest": "jest --no-cache",
+    "test:jest": "jest --no-cache --maxWorkers=2",
     "test:watch": "yarn test -- --watch",
     "test:coverage": "yarn test --coverage",
     "build": "node ./node_modules/babel-cli/bin/babel-node.js ./node_modules/gulp/bin/gulp.js build",
@@ -37,7 +37,7 @@
     "react-router": "^3.0.0",
     "react-router-redux": "^4.0.7",
     "ringcentral": "^3.1.3",
-    "ringcentral-client": "^1.0.0-rc1",
+    "ringcentral-client": "^1.0.0-beta.1",
     "ringcentral-integration": "^0.7.37"
   },
   "devDependencies": {
@@ -90,7 +90,7 @@
     "redux-logger": "^3.0.6",
     "redux-thunk": "^2.2.0",
     "ringcentral": "^3.1.3",
-    "ringcentral-client": "^1.0.0-rc1",
+    "ringcentral-client": "^1.0.0-beta.1",
     "ringcentral-integration": "https://github.com/ringcentral/ringcentral-js-integration-commons#latest",
     "sass-loader": "^6.0.5",
     "source-map-loader": "^0.2.1",