Add LocusName to snp_table

[moorembioinfo]

Hi Chad,

Could an option be added whereby the LocusName is added to the snp_table.txt matrix? I'm attempting to analyse snps per fragment but the core_snps.txt can become massive!

The output I have in mind would look like this:

<style> </style>

		genome1	genome2	genome3	genome4
LocusName1	4567	A	T	C	G
LocusName1	10384	A	T	C	G
LocusName2	12475	A	T	-	G
LocusName2	14569	-	G	C	G

Thanks in advance for any help with this!

EDIT: I realise now that the positions are not included already. So it would be to add the LocusName's and positions. For my purposes the LocusName's alone would be sufficient

[moorembioinfo]

closing issue and submitting pull request #34