First commit

Added most of parameters to the Tracker class, along with
MaxByteCountAttribute and ParameterAttribute classes.
Put parameters in TrackerParameters class...

...and implement name value collection generation from
ParameterAttribute
Implement send data

Implemented sending the data using
WebClient.UploadValues(NameValueCollection) using the
NameValueCollection created from the properties of Tracker.Parameters
having a ParameterAttribute attribute.