While installing through pods, its not installing and getting error "[!] No podspec found for `googleapis` in `

Question

I am doing Objective-C for iOS application and I want to install google cloud speech api, as per docs,

Google docs given example in following link, I followed for streaming

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

I am trying to installing pod 'googleapis', :path => '.' but, its getting following error

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

and my pod file is

# 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

And my pod file version is cocoapods-1.2.1

Can anyone help to fix this?