Started the base for integrating cURL into React-CPP
Made a bit more progress towards curl support, no library user APIs work just yet
Merge branch 'master' into curl

Conflicts:
	tests/.gitignore
Initial version that works properly with cURL

You however currently cannot pipeline your requests. As it will make
a curl multi object for every request. This is being worked on however.
Added a constructor to Request that allows you to construct with a CurlMulti object
Let's also store the headers of the cURL requests
Properly save error from curl and actually call the failure() callback
Added a curl example
Disable verbose mode in cURL by default
The Result class will now also have the response code for us
Prettified the code of the cURL a bit
Merge branch 'curl'