Add Codeception Unit Tests

v0.6-alpha

add scrutinizer exclude folders (tests and vendor)

Add Account Balance (if supported)

• Only for Nexmo and PromoTexter

Add Twilio SMS Provider

v0.4-alpha

add support for Twilio

Add Nexmo SMS Provider

1. Add Nexmo as new SMS Provider
2. Added metadata in the response envelope. This is the actual response thrown by the SMS Gateway

Initial Unstable Release

• Updated README.md file

Initial Unstable Release

v0.1-alpha

up version