remove unused file
Sort records for correct true/false positives
Use idiogrammatik and vcf.js from NPM

And many associated changes, including cleaning up code that used the
old APIs provided by the modules, and improving idiogram interactivity
by gainfully using the new API.
CR: assert records are sorted for set ops, spelling
Add first JS tests! Use Mocha.
Address CR
CR: move comments above function body
Merge pull request #57 from hammerlab/issue_45_proper_precision_recall_f1score

Sort records for correct true/false positives
Address CR
Merge pull request #59 from hammerlab/issue_58_use_npm_modules

Use idiogrammatik and vcf.js from NPM
merge with upstream