Documentation update

Minor update.
Check for status_code availability

Custom headers support

v0.2.0

Added custom headers support

v0.1.0: Residential proxies support

Version bump to 0.1.0

Maintenance

v0.0.3

Fix undefined behavior

New API parameters

Merge pull request #2 from ScrapingAnt/feature/update_api_parameters

#1: update API parameters

Initial release

Initial ScrapingAnt API JS client release