sequelize/sequelize — pull request #1039 by schonfeld (2013-11-04 23:34:51+00:00)
Title: Sum() Finder Functionality

Adding support for using SQL's SUM() functionality. Example can be found in the sum example file `examples/sum/app.js`

Usage example:
```
Project.sum('hours').success(function(hours) {
console.log("This project took " + hours + " hours to complete.")
})
```

Code, tests, and example included. Thanks for considering & merging!