Updated README.md to mention alternative yaml-like syntax.
Updated README.md to mention alternative yaml-like syntax.

Nuru/dotenv,GearboxSoftware/dotenv,dkastner/dotenv,customink/dotenv,y-yagi/dotenv,cshaffer/dotenv,ooohiroyukiooo/dotenv,bkeepers/dotenv,slowjack2k/dotenv,janusnic/dotenv,spore-sh/spore-rails,joemcmahon/dotenv,Donavan/dotenv,rkachowski/dotenv,sheax0r/dotenv,Neschur/dotenv,sorah/dotenv