changed parameter handling to accept hash as well as additional parameters that are not defined or covered by this lib but API
changed parameter handling to accept hash as well as additional parameters that are not defined or covered by this lib but API

Bopster/ruby-lastfm,youpy/ruby-lastfm,alexis779/ruby-lastfm,ShanaLMoore/ruby-lastfm,jjgh/ruby-lastfm,volontarian/ruby-lastfm