Applitools integration now passes API apiKey as a query string parameter, instead of a header.
This allows avoid problems encountered by users who are behind a proxy server.
Added JetBrains IDE settings folder (".idea") to .gitignore .
Updated README about the prerequisites for running tests when contributing to WebDriverCSS.
Merge pull request #29 from danielputerman/v1.0

Applitools API key passed as a query string argument