Converts a html table to a csv string and provides a callback function with the csv string as argument, the default delimiter is a ",".
Show me the csv string
| Name1 |
Name2 |
Name3 |
Name4 |
Name5 |
| c1r1 |
c2r1 |
c3r1 |
c4r1 |
c5r1 |
| c1r2 |
c2r2 |
c3r2 |
c4r2 |
c5r2 |
| c1r3 |
c2r3 |
c3r3 |
c4r3 |
c5r3 |