Installation instructions for the packages

[briantical]

Describe the issue

The installation commands for the packages described in the READMe refer to non-existent packages. I had to individually look for the packages on npm. There is an error in the package names. The difference is between "-" and ".".

Instructions in the READMe ❌

npm install @reloadly/reloadly-airtime
npm install @reloadly/reloadly-authentication

Installation instructions at NPMJS ✅

npm i @reloadly/reloadly.airtime
npm i @reloadly/reloadly.authentication

Kindly rectify the typo.