Guys, Before installing Magento 2, You must update PHP CLI version.
Follow the video tutorial below.
https://youtu.be/BqwXiMczZH0
Also, Clone your PHP.INI file into Magento root directory.
https://youtu.be/bnS3bwkrOkE
This tutorial meant to be staging purpose. In case, You're looking for the production environment. I suggest, Upgrade your current plan to business plan.
Business Plan
Indexers have a disability: 7:39
Cache Management: 8:34
Update: https://goo.gl/e81abo
If You find above video is helpful. give me a kudos!.
Thank You.