simplify query parameter encoding with `NSURLQueryItem` Previously, query parameters were encoded manually by piecing together string values with `stringByAddingPercentEncodingWithAllowedCharacters`. This change allows `NSURLQueryItem` to handle the percent encoding and uses `NSURLComponents` to produce the encoded query string.
simplify query parameter encoding with `NSURLQueryItem`
Previously, query parameters were encoded manually by piecing together string values with `stringByAddingPercentEncodingWithAllowedCharacters`. This change allows `NSURLQueryItem` to handle the percent encoding and uses `NSURLComponents` to produce the encoded query string.

dwsjoquist/ELWebService,TheHolyGrail/Swallow,Electrode-iOS/ELWebService,Electrode-iOS/ELWebService