Change header in read_meth_freq() function

[drkennetz]

Hi wdecoster, I just wanted to update you that with the newest version of nanopolish, 'num_cpgs_in_group' has changed to 'num_motifs_in_group'. Changing this in your code allows the library to work fine for the browser.

Thanks,
Dennis

[wdecoster]

Thanks for letting me know! I'll fix it.

Cheers,
Wouter