Simplify passing of AWS credentials.
Simplify passing of AWS credentials.

rtfeldman/dreamwriter,zztczcx/dreamwriter,Iced-Tea/dreamwriter,ajnsit/dreamwriter,jlongster/dreamwriter,manesiotise/dreamwriter,Iced-Tea/dreamwriter,rtfeldman/dreamwriter,manesiotise/dreamwriter,zztczcx/dreamwriter,Softsapiens/dreamwriter,ajnsit/dreamwriter,makyo/dreamwriter,Softsapiens/dreamwriter,makyo/dreamwriter,jlongster/dreamwriter