Make cURL's timeout and connect timeout configurable

The less ideal but backwards-compatible and easier way.
Merge pull request #5 from ollietb/master

Update from ollietb
Add configuration options to README.md for timeouts
Merge pull request #3 from rmasters/configurable-timeouts

Make cURL's timeout and connect timeout configurable
Merge pull request #6 from ollietb/master

Merge from ollietb fork
Merge pull request #11 from ollieLtd/master

Merge from ollieLtd fork