Merge pull request #3 from aef/master

First step to Rails 3 compatibility

Add quote_ident method for rails 2.3.{3,4} compat.

See http://github.com/mneumann/postgres-pr/issues#issue/1 and
http://github.com/rails/rails/commit/60601234708b34c81dcd6a58a0cad79a7520ce10

Submitted-by: http://github.com/rahim

Fix URL

Correct escaping of backslahes (-> 0.6.1)

Increase version to 0.6.0

Version 0.5.1

Project moved away from ruby-dbi to it's own

rubyforge project postgres-pr.

tagged 0.4.0