Zalo web chat installation, integration, and, customization from Zalo php sdk reqired

We hope to install zalo web chat, and, integration with our cakephp based SNS site.
Then, minor customization is required.
As posted in many website, Zalo is Vietnamese Chat, and, SDK is available
https://github.com/zaloplatform/zalo-php-sdk

And, you can see web zalo, https://github.com/zaloplatform/zalo-php-sdk
Freelancer who experienced Zalo web already would be highly welcomed.