Support for set cookie file path and overwrite default curl options

Hi!
I added support for set cookie file path and overwrite default curl options.
I need to change cookie file path because i you your library from Yii framework and current directory is not writeable by framework rules.
Also, curl showing me warning about CURLOPT_SSL_VERIFYHOST (and force me to set CURLOPT_SSL_VERIFYHOST=2) and i can't overwrite this without changing your library code (and this is what i prefer to avoid).
Will be fine if you can accept my changes so i will have no need in maintain my own repo.
Thank you for your fine work!