fix generate repo so it's does a git init - fixes chef-boneyard#551

Author: keen99

lib/chef-dk/skeletons/code_generator/recipes/repo.rb

@@ -37,7 +37,7 @@
   execute("initialize-git") do
     command("git init .")
     cwd repo_dir
-    not_if { "#{repo_dir}/.gitignore" }
+    not_if { File.exists?("#{repo_dir}/.gitignore") }
   end
 
   template "#{repo_dir}/.gitignore" do