improved README.md for HighCharts disclaimer
improved README.md for HighCharts disclaimer

camunda/camunda-consulting,nagyistoce/camunda-consulting,plexiti/camunda-consulting,nagyistoce/camunda-consulting,plexiti/camunda-consulting,camunda/camunda-consulting,plexiti/camunda-consulting,camunda/camunda-consulting,nagyistoce/camunda-consulting,camunda/camunda-consulting