Improving the description of META6.json
Improving the description of META6.json

For the time being, no new section. If you think it's absolutely necessary, reopen the issue.

Closes #551

jonathanstowe/doc,stmuk/doc,stmuk/doc,tbrowder/doc,dmaestro/doc,jonathanstowe/doc,dmaestro/doc,perl6/doc,jonathanstowe/doc,tbrowder/doc,tbrowder/doc,stmuk/doc,perl6/doc,stmuk/doc,dmaestro/doc,dmaestro/doc,MasterDuke17/doc,jonathanstowe/doc,jonathanstowe/doc,perl6/doc,tbrowder/doc,MasterDuke17/doc,MasterDuke17/doc,MasterDuke17/doc,stmuk/doc,dmaestro/doc,perl6/doc,perl6/doc