fix AWS_* env in docs to match SDK. Closes #506
fix AWS_* env in docs to match SDK. Closes #506

llun/apex,llun/apex,ianrtracey/apex,apex/apex,apex/apex,ianrtracey/apex,apex/apex,DaveBlooman/apex,apex/apex,ianrtracey/apex,DaveBlooman/apex,DaveBlooman/apex,apex/apex,DaveBlooman/apex,llun/apex,llun/apex,llun/apex,DaveBlooman/apex,ianrtracey/apex,ianrtracey/apex,DaveBlooman/apex,apex/apex,apex/apex,ianrtracey/apex,llun/apex