Not using atmosphere for it is easier to link in the import.less files as a package. So git clone into your packages directory and then do a meteor add
meteor add pfafman:bootstrap-material-design
Pull the less import files into your main.less file.
@import "packages/pfafman:bootstrap-material-design/lib/less/material-wfont.import.less";
@import "packages/pfafman:bootstrap-material-design/lib/less/ripples.import.less";