Fixed terraform-aws-modules#12, final_snapshot_identifier default can…

…'t be empty actually

Added skip_final_snapshot=true in module also (remaining from terrafo…

…rm-aws-modules#3)

Merge pull request terraform-aws-modules#9 from yamaszone/master

Added complete example for Postgres RDS

Merge pull request terraform-aws-modules#6 from yo61/enable_enhanced_…

…monitoring

Add enhanced monitoring

Merge pull request terraform-aws-modules#6 from yo61/enable_enhanced_…

…monitoring

Add enhanced monitoring

Merge pull request terraform-aws-modules#4 from fmartingr/encryption

Using `storage_encrypted` to set the db_instance.storage_encrypted

Merge pull request terraform-aws-modules#2 from khosrow/master

db parameters can now be passed to db_parameter_group module

Added monitoring_interval parameter

Updated comment