Using guzzle instead of CURL

[creativefctr]

Hi,
I think the main API request function should be updated to use guzzle instead of directly going for curl!
Advantages:
It's much more modern and easier to debug
Code would be cleaner
We can use guzzle async features to make asynchronous requests:
This is important because most people use this library for checking domain availability and if you target multiple TLD's many serial requests would have to be made and the script would get really slow.
Thanks