Merge pull request #1 from cogell/master

updates readme with gitignore decision on node_modules #19718077185445
Merge pull request #2 from cogell/master

connects travis to slack #20301036059772
adds jspm, systemjs, and es6 module support
corrects paths for systemjs loading
trying to get karma tests running
updating tasks for jspm workflow
Merge pull request #4 from cogell/add-jspm-workflow

Add jspm workflow #20828648077699