adding in the original extends spec test from the $2k bounty issue. it now passes on libsass! sass/libsass#146
Duplicate test
issue test for sass/sass-lang#495
revert
added the trailing comma test for sass/libsass#495
Trying a more logical structure

Need to write it up in the readme.
Moving benchmarks out to the main repo
More reorganization
Updated readme to reflect changes in the file structure

Plus, wrote about contribution
merge