Update package.json
Update package.json

Fixing errors/warnings per http://package-json-validator.com/

The `keywords` should be an array not a space delimited string.
barc/express-hbs,whynotmatt/express-hbs,WY08271/express-hbs,prosenjit-itobuz/express-hbs,ezzygemini/express-hbs,WY08271/express-hbs,whynotmatt/express-hbs,AnliHuer/express-hbs,AnliHuer/express-hbs,prosenjit-itobuz/express-hbs,ezzygemini/express-hbs,barc/express-hbs