Pass connection errors to callback
Add ping()
Bump version
Merge branch 'release/1.1.2' into production
Merge tag 'v1.1.2'

1.1.2
Merge pull request #26 from strongloop/feature/fix-crash-on-connect-failure

Pass connection errors to callback
1.1.3
Merge branch 'release/1.1.3' into production
Merge tag 'v1.1.3'

1.1.3
Merge remote-tracking branch 'upstream/master'

Conflicts:
	lib/postgresql.js