Replaced underscore with lodash.
Merge pull request #594 from durango/lodash

Replaced underscore with lodash.
Update README.md
lodash
Merge pull request #595 from optilude/fk-constraints

Support for foreign key constraints (#389)
fk constraints
Updated roadmap with foreign key support
Added deletedAt buster tests borrowed from @gustawpursche
Merge pull request #597 from innofluence/deletedAtTest

Added deletedAt buster tests borrowed from @gustawpursche
Merge branch 'master' of github.com:sequelize/sequelize
fixed url to irc channel
DAO factory API sketch
Query interface and generator API sketch
Implementation sketch and query generators
Refactored and simplified create method plus outline tests
Refactor given understanding of how it's possible to return autogenerated ids; tests for bulkCreate
Enum test
Test for bulk update
Tests for bulkUpdate
Test + fix for bulk delete