Fix method scoping on two sub-resources within the callback.

Looks like the run context for the deploy resource callbacks has changed (or this just never worked).
Merge pull request #42 from poise/scopefix

Fix method scoping on two sub-resources within the callback.

Ref https://github.com/poise/application/issues/36
fix deprecation warnings for Chef::DS?L::IncludeRecipe
adding missing getter for bundle_options
`bundler_without_groups` should take precedence over automated config

The README states:

> When running Bundler, unnecessary groups will be skipped. The list of groups
> to skip is determined with this algorithm:
> 
> * start with this Array: development test cucumber staging production;
> * the group corresponding to the current environment will be removed from the
>   Array;
> * if the bundler_without_groups attribute is set, those groups will be added
>   to the Array.

yet, the current implementation prevented you from ignoring a group if it had
the same name as the current environment. This fixes that
Update README.md
[COOK-4395] Add HOME env var to satisfy readline
add ability to set database host instead of searching for it
have environment use the ssh wrapper if using a deploy key
add def for bundle_options to fix NameError
add ability to specify runit_template_cookbook for unicorn
pass preload_app option through to runit template
add new option to README
Merge pull request #57 from bellycard/bundle_options-fix

Add def for bundle_options to fix NameError
Merge pull request #56 from bellycard/bundler-ssh-fix

Have environment use the ssh wrapper if using a deploy key
Merge pull request #55 from bellycard/specify-db-host

Add ability to set database host instead of searching for it
Merge pull request #53 from rgeyer-rs-cookbooks/COOK-4395

[COOK-4395] Add HOME env var to satisfy readline
remove redundant template attribute
Merge pull request #58 from bellycard/unicorn-service-template

Custom unicorn runit templates
Allow configuring the port if specificed.

Closes #21