Added convenience method and result fields when querying foreign keys in a Postgres db. These fields provide the names of the referencing column and referenced table and column in the result similar to SQLite syntax.
Added id field to foreign key result
Fixed typos and added test.
[ci skip] Mention GHFM in contributing.md
Fixed regex for foreign key query. Added on_update/on_delete keys and testing for them.
Declared keys locally in describeForeignKeys test
Merge branch 'master' of https://github.com/sequelize/sequelize into pg
Merge pull request #2349 from 3ch01c/pg

Added convenience fields to Postgres foreign key query results
Refactor of sequelize methods handling in abstract qg. Made sequelize.where smarter
Add changelog entry  and clean up code for sequelize.where
Merge pull request #2318 from janmeier/master

Made sequelize.where smarter
Merge remote-tracking branch 'upstream/master'