* Added a test for unzipFile (which uses adm-zip)
* Tested that it worked with adm-zip and then failed once adm-zip was taken out
* Replaced 'adm-zip' with zip.extractAllTo from appium-supprt
* Update hash
* Add validateCapabilities and parseCapabilities
* Added merge capabilities
* Moved capabilities into it's own file
* Added capabilities as a possible required param
* Can pass desiredCapabilities or capabilities into createSession
* Remove 'required' desiredCapabilities
* desiredCapabilities isn't required any more because we can provide capabilities as well
* Will need to update validation logic in 'driver.createSession' to do the validation there instead
* Code cleanup
* Skip presence constraint in parseCapabilities
* We don't need to check that items are present until after we've formed the matched capabilities
* Added validation function to routes
* Function 'validate' takes params as an arg and then returns a message if the validation fails
* Uses this to validate that either "capabilities" or "desiredCapabilities" was provided
* Renamed capabilities to caps
* Move caps required validator from process to parse
* Removed InvalidParametersError
* Update BadParametersError so that if a message is added as the 3rd argument it shows a different error message
* Made validation re-usable
APK files were not being installed because they were being written to a file without an "apk" extension. So added back the appExt suffix logic. If it's given and the downloaded file is not a ZIP file, then everything behaves normally. If the downloaded file is a ZIP file, then regardless of what we thought initially, it will be unzipped and placed into another temp location.
Isaac A. Murchie