Recipes require SSH keys

A fresh install yield the error below. This is because you don't yet have an SSH key on Github. This should probably just be added to the instructions.
Recipe: sprout-git::git_projects
  * execute[clone devops/sprout-wrap] action run[2014-08-10T10:29:16-04:00] INFO: Processing execute[clone devops/sprout-wrap] action run (sprout-git::git_projects line 26)

    ================================================================================
    Error executing action `run` on resource 'execute[clone devops/sprout-wrap]'
    ================================================================================

    Mixlib::ShellOut::ShellCommandFailed
    ------------------------------------
    Expected process to exit with [0], but received '128'
    ---- Begin output of git clone git@github.com:influitive/sprout-wrap.git devops/sprout-wrap ----
    STDOUT: 
    STDERR: Cloning into 'devops/sprout-wrap'...
    Host key verification failed.
    fatal: Could not read from remote repository.

    Please make sure you have the correct access rights
    and the repository exists.
    ---- End output of git clone git@github.com:influitive/sprout-wrap.git devops/sprout-wrap ----
    Ran git clone git@github.com:influitive/sprout-wrap.git devops/sprout-wrap returned 128

    Resource Declaration:
    ---------------------
    # In /Users/dev/sprout-wrap/cookbooks/sprout-git/recipes/git_projects.rb

     26:   execute "clone #{repo_name}" do
     27:     command "git clone #{repo_address} #{repo_name}"
     28:     user node['current_user']
     29:     cwd "#{node['sprout']['home']}/#{repo_dir}/"
     30:     not_if { ::File.exists?("#{node['sprout']['home']}/#{repo_dir}/#{repo_name}") }
     31:   end
     32: 

    Compiled Resource:
    ------------------
    # Declared in /Users/dev/sprout-wrap/cookbooks/sprout-git/recipes/git_projects.rb:26:in `block in from_file'

    execute("clone devops/sprout-wrap") do
      action "run"
      retries 0
      retry_delay 2
      guard_interpreter :default
      command "git clone git@github.com:influitive/sprout-wrap.git devops/sprout-wrap"
      backup 5
      cwd "/Users/dev/Code/infl/"
      returns 0
      user "dev"
      cookbook_name :"sprout-git"
      recipe_name "git_projects"
      not_if { #code block }
    end

[2014-08-10T10:29:16-04:00] INFO: Running queued delayed notifications before re-raising exception

Running handlers:
[2014-08-10T10:29:16-04:00] ERROR: Running exception handlers
Running handlers complete
[2014-08-10T10:29:16-04:00] ERROR: Exception handlers complete
[2014-08-10T10:29:16-04:00] FATAL: Stacktrace dumped to /var/chef/cache/chef-stacktrace.out
Chef Client failed. 70 resources updated in 38.175641 seconds
[2014-08-10T10:29:16-04:00] ERROR: execute[clone devops/sprout-wrap] (sprout-git::git_projects line 26) had an error: Mixlib::ShellOut::ShellCommandFailed: Expected process to exit with [0], but received '128'
---- Begin output of git clone git@github.com:influitive/sprout-wrap.git devops/sprout-wrap ----
STDOUT: 
STDERR: Cloning into 'devops/sprout-wrap'...
Host key verification failed.
fatal: Could not read from remote repository.

Please make sure you have the correct access rights
and the repository exists.
---- End output of git clone git@github.com:influitive/sprout-wrap.git devops/sprout-wrap ----
Ran git clone git@github.com:influitive/sprout-wrap.git devops/sprout-wrap returned 128
influitive / sprout-wrap

Recipes require SSH keys #2
