Review set up of the repo

[peterdesmet]

I've just finished moving http://www.tdwg.org/standards/150 to this repo. The @tdwg/guid team should review this.

Notes:

• As suggested by Eamonn O'Tuama, the shortname of the repo is guid-as and not guid-lsid-as "because potentially other applicability statements for DOIs, URIs, etc may be deposited there". As a result, I have also chosen to give it the title "GUID applicability statements" and not "GUID and Life Sciences Identifiers Applicability Statements"
• I've uploaded the statements from as a file applicability_statement.doc in its own folder guid, lsid. That allows to extend this to e.g. doi in the future. Also, the directory allows to contain more than one file related to the statement.
• In the README I mention both applicability statements. For both I use the acronym (GUID, LSID) in the title, but explain it in full on the next line.
• I also mention the preferred citation, given me by Eamonn.

Todo by @tdwg/guid :

• Give OK for the changes
• Add additional members to the @Guid team if necessary
• Upload statements in a better format that doc which is not even rendered by GitHub. pdf is probably the easiest.
• Use this repo for tracking issues related to these applicability statements or new ones.

If you need any help regarding this, let me know.