adding content-type header
Merge branch 'port-config-fix'
rename of config file
up version to 1.3
update nuget info
hide test files
adding % encoding tests
merge from master
Restructing and additional tests

* Moving Pusher.Server -> PusherServer
* Adding tests to check the URL format
* Adding the ability to set PusherOptions.Encrypted for HTTPS support
* Check Pusher constructor arguments: appId, appKey and appSecret
* PusherOptions now provides a default RestClient instance