Re-arrange the sections in RB-Nutshell
Re-arrange the sections in RB-Nutshell

Plus some misc edits

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