def commit grid
      puts 'grid = '
      pp grid.join "\n"
      res = self.connection.post('commit') do |req|
        req.headers['Content-Type'] = 'text/plain'
        req.body = grid.join "\n"
      end
      JSON.parse! res.body
    end
def commit grid
      puts 'grid = '
      pp grid.join "\n"
      res = self.connection.post('commit') do |req|
        req.headers['Content-Type'] = 'text/plain'
        req.body = grid.join "\n"
      end
      JSON.parse! res.body
    end
http://www.skyfoundry.com/doc/docSkySpark/Ops#commit
 grid is array of strings