Fixing description.
Prevent system collections from being returned by db.Database.Collections().
Using time.Local for testing date.
Fixing test that failed to build.
Updating readme with new links.
Adding PGPASSWORD variable for easier make.
Updating README file
Updating README.
Improving docs and code revision.
Replacing github.com/xiam/gosqlite3 with github.com/mattn/go-sqlite3 in the sqlite adapter.
Merge branch 'master' of https://github.com/upper/db into github