Renombrar simpleHTTP a simpleHTTPAdapter

Renombrar simpleHTTP.php a simpleHTTPAdapter.php

My patches:

- Replace Guzzle with simpleHTTP
- Add DNSSEC support

Add Account Role Listings (cloudflare#198)

I want to list the roles availablew in an account so I can add a member
to the account

Merge pull request cloudflare#180 from phily245/179-missing-support-f…

…or-custom-hostname-update-properties

Missing Support For Custom Hostname Update Properties

Merge pull request cloudflare#164 from cloudflare/apalaistras/fix-req…

…uest-error-handling

Adapter/Guzzle: Fix error handling for v4 API

[RFR]: Added Origin CA Certificate endpoint (cloudflare#123)

* Added Certificate endpoint

* Implement all calls in /certificates endpoint

* Added to travis more php versions

* Fix package compatibility

* Added CertificateTest

* Added test for Certificate endpoint

* Added more tests

* Updated README

Co-authored-by: haphan <[email protected]>

Merge pull request cloudflare#98 from llbbl/firewall-rules

Adding new Firewall rules Class

Update README.md

Merge pull request cloudflare#78 from linuxjuggler/master

Implementing the User's Account Memberships