There were some things that needed to be changed for the sass preprocessor to work. There were some variables declared as @ that need to be declared with the right syntax: $. Also sass evaluation is eager, while less evaluation is _lazy_ that means in sass, mixins should be declared before they are use. I hope you can accept this change as it's currently not working. Thanks!
I installed this package with bower and encountered an error while checking for existence of main bower files. I changed the filename to the correct one. Please take a look. Thanks!