Fix loading of current resource
Allow chef_vault_item to fall back to data bags

Fixes #6

This allows cookbooks that use chef_vault_item to work transparently in
situations where chef vault isn't yet in use, such as development/staging
environments, without any changes. This change replaces the 'dev_mode'
attribute that was previously requires for chef_vault_item to use unencrypted
data bags instead.
Set a default version of chef-vault

The version of chef-vault needs to be set to a sane default, where "sane" is defined by:

    A version of chef-vault that has the API we use in the helpers.

The current release is 2.2.4, which will be installed on new systems.
However, if a system had e.g. `1.2.5`, it wouldn't have the
ChefVault::Item class used by the `chef_vault_item` helper.
Merge pull request #9 from opscode-cookbooks/mh/dbag_fallback

Allow chef_vault_item to fall back to data bags
Merge pull request #8 from nhuff/fix_load

Fix loading of current resource
Merge pull request #11 from opscode-cookbooks/jtimberman/default-v2-version

Set a default version of chef-vault
release v1.1.4
COOK-4672 - Update library so it can be used in other libraries