New feature: Added some helpers
New feature: Culr::__destructor, Curl::close

- Improved Gurl::loadStdConfig
Updated feature: Added initial Russian
Fixed issue: PHPDoc
Fiixed issue: Some cleanup
New feature: Curl helpers
New feature: Added Curl::put, i18n support
New feature: Curl::patch, Curl::delete, Curl::head, Curl::options
Fixed issue: Cleanup code
Update feature: Added initial user guide
Fixed issue: Amended README