Create InputStream constructor
Need to remove FileInputStream

Added if statement for ignoring values with "additive" attribute
Added method for generating DisplayData List
changed from station list to DataDisply List.
Use WeatherDataParsed class to read and parse XML from URL.
Update period in weather data processed
Added city, staste and zip to data.
Add if statement to Log calls.
Change return type from StastionData to WeatherDataProcessed
Comment test code.