transform to commonjs
update for spm@3.x
update travis.yml
update travis.yml
test travis.yml
test travis.yml
upgrade for spm3.x
update travis
Add spm badge
Add spm badge
delete dist
fix for spm@3.x
Merge branch 'commonjs' of github.com:aralejs/class into commonjs
update version for spm@3.x
update history
fix the indent
Merge pull request #1 from aralejs/master

合并原作者的更新