code: def teams(summoner, optional={})
      region = optional[:region] || @sightstone.region
      id = if summoner.is_a? Summoner
        summoner.id
      else
        summoner
      end
      
      uri = "https://prod.api.pvp.net/api/lol/#{region}/v2.2/team/by-summoner/#{id}"
  
      response = _get_api_response(uri)
      _parse_response(response) { |resp|
        data = JSON.parse(resp)
        teams = []
        data.each do |team|
          teams << Team.new(team)
        end
        if block_given?
          yield teams
        else
          return teams
        end
      }
    end
docs: call to receive all teams for a summoner
   @param [Summoner, Fixnum] summoner summoner object or id of a summoner
   @param optional [Hash] optional arguments: :region => replaces default region
   @ return [Array<Team>] An array containing all teams of the given summoner