(#4647) - update CONTRIBUTING.md, better blogpost instructions
(#4647) - update CONTRIBUTING.md, better blogpost instructions

[skip ci]

yaronyg/pouchdb,bbenezech/pouchdb,willholley/pouchdb,tyler-johnson/pouchdb,cdaringe/pouchdb,lukevanhorn/pouchdb,nickcolley/pouchdb,bbenezech/pouchdb,seigel/pouchdb,mikeymckay/pouchdb,shimaore/pouchdb,garrensmith/pouchdb,cdaringe/pouchdb,mikeymckay/pouchdb,daleharvey/pouchdb,garrensmith/pouchdb,willholley/pouchdb,tyler-johnson/pouchdb,colinskow/pouchdb,lukevanhorn/pouchdb,jhs/pouchdb,willholley/pouchdb,mikeymckay/pouchdb,TechnicalPursuit/pouchdb,pouchdb/pouchdb,shimaore/pouchdb,garrensmith/pouchdb,nickcolley/pouchdb,lukevanhorn/pouchdb,daleharvey/pouchdb,jhs/pouchdb,daleharvey/pouchdb,tyler-johnson/pouchdb,TechnicalPursuit/pouchdb,TechnicalPursuit/pouchdb,nickcolley/pouchdb,seigel/pouchdb,shimaore/pouchdb,cdaringe/pouchdb,pouchdb/pouchdb,seigel/pouchdb,colinskow/pouchdb,jhs/pouchdb,colinskow/pouchdb,bbenezech/pouchdb,yaronyg/pouchdb,yaronyg/pouchdb,pouchdb/pouchdb