在通过pod安装时，它没有安装并收到错误“[！]没有发现podspec为`googleapis`中`

Question

我正在为iOS应用程序做Objective-C，我想根据文档安装google cloud speech api，

Google文档在以下链接中给出了示例，我关注了流媒体

https://github.com/GoogleCloudPlatform/ios-docs-samples/tree/master/speech/Objective-C

我正在尝试安装pod'googleapis'，：path =＆gt; '' 但是，它得到了跟随错误

Analyzing dependencies
Fetching podspec for googleapis from .
[!] No podspec found for googleapis in .

我的pod文件是

# Uncomment the next line to define a global platform for your project
# platform :ios, '9.0'

    target 'appName' do
      # Uncomment the next line if you're using Swift or would like to use dynamic frameworks
       # use_frameworks!

      # Pods for AppSpeak
       pod 'MBProgressHUD'
       pod 'Fabric'
       pod 'Crashlytics'
       pod 'googleapis', :path => '.'
       end

我的pod文件版本是cocoapods-1.2.1

任何人都可以帮忙解决这个问题吗？