Fix collectd config file CamelCase for data_bag_plugins (Closes #25)
Simplify collectd_key to always output CamelCase for both String & Symbol input
Merge branch 'fix-camelcase' of github.com:trinitronx/chef-collectd into fix-camelcase

Conflicts:
	libraries/default.rb
Fix broken collectd_purge_plugins function
Add support for nested plugin config settings (in collectd plugin attributes)

NOTE: Depends on issue #25
Bump cookbook version to reflect changes in nested plugin support
Added documentation for plugin recipes to README
Merge branch 'nested-plugin-conf' of github.com:trinitronx/chef-collectd into nested-plugin-conf