def convert_param_keys(underscored_params)
      pairs = underscored_params.map do |key, value|
        key = key.to_s.gsub(/_([a-z])/i) { $1.upcase }
        [key, value]
      end
      Hash[pairs]
    end
def convert_param_keys(underscored_params)
      pairs = underscored_params.map do |key, value|
        key = key.to_s.gsub(/_([a-z])/i) { $1.upcase }
        [key, value]
      end
      Hash[pairs]
    end
Converts foo_bar_param to fooBarParam.