Initial commit
Add README

README explains what the supplementals refer to
Add Figure 1A supplementals

* 18S full seq alignment and mask in mase format
* 18S full seq masked sites in fasta format
Add Figure 3A supplementals

* Simplified perkinsus alignment and mask in mase format
* Simplified perkinsus masked sites in fasta format
Organised supplementals into figure specific folders and updated README to reflect this