Fix remote_file_spec.rb

If pre_action is not executed, @temppath is not set and spec fails.
Accept array as resource attribute

You can write recipe like this with this fix.

```ruby
service 'httpd' do
  action: [ :enable, :start ]
end
```
Merge pull request #20 from mizzy/accept-array-as-resource-attribute

Accept array as resource attribute
Merge pull request #19 from mizzy/fix-remote_file_spec

Fix remote_file_spec.rb
Call specinfra in service resource
Merge pull request #21 from mizzy/call-specinfra-in-service-resource

Call specinfra in service resource
Remove dependency on net-scp.

Specinfra.gemspec has dependency on net-scp now.
Change copy_file to send_file according to serverspec/specinfra#195
Call specinfra to copy and move files according to serverspec/specinfra#196
Update dependency on specinfra
Merge pull request #22 from mizzy/remove-dependency-on-net-scp

Remove dependency on net-scp.
Add disable action to service resource.
action attr accepts Symbol and Array.
Add tests for multiple actions.
Bump up version.
Show diff of service status.
Show whether the service is enabled or not.
Refactor.
Add --ohai option to load host metadata.
Bump up version.