config tweaks

- add json linting
- rm duplicate scripts.test from package.json
- .gitignore xunit.xml
Merge branch 'master' of github.com:isao/express-map into isao-master
Reformat .jshintrc file and remove a couple options that aren't needed

This also changes the `npm` `lint` script to run lint on the `lib/` dir
as well.
Fill-in HISTORY.md