appveyor: add AWS vars, link to ci-scripts@1.1.0
appveyor: add AWS vars, link to ci-scripts@1.1.0

nbuchanan/node-gdal,nbuchanan/node-gdal,jdesboeufs/node-gdal,naturalatlas/node-gdal,naturalatlas/node-gdal,naturalatlas/node-gdal,nbuchanan/node-gdal,jdesboeufs/node-gdal,naturalatlas/node-gdal,nbuchanan/node-gdal,jdesboeufs/node-gdal,jdesboeufs/node-gdal