Adding compatibility with Chef 11

.travis.yml

@@ -6,6 +6,7 @@ rvm:
 env:
   - CHEF_VERSION=12.6.0
   - CHEF_VERSION=12.7.2
+  - CHEF_VERSION=11.18.2
 notifications:
   email: false
 sudo: false

README.md

@@ -68,8 +68,7 @@ when everything is in sync or 1 if it's not.
 
 ## Compatibility
 
-This gem is tested with Ruby 2.1 and 2.2 and should be compatible with Chef
-10, 11 and 12.
+This gem is tested with Ruby 2.1 and 2.2 and has been tested with Chef 12 and Chef 11.
 
 ## Contributors
 

lib/health_inspector/checklists/base.rb

@@ -141,9 +141,17 @@ def load_ruby_or_json_from_local(chef_class, folder, name)
           instance = chef_class.new
           instance.from_file(ruby_pathname.first.to_s)
         elsif !json_pathname.empty?
-          instance = chef_class.from_hash(Yajl::Parser.parse(json_pathname.first.read))
+          if Chef::VERSION.start_with? "12"
+            instance = chef_class.from_hash(Yajl::Parser.parse(json_pathname.first.read))
+          else
+            instance = chef_class.json_create(Yajl::Parser.parse(json_pathname.first.read))
+          end
         elsif !js_pathname.empty?
-          instance = chef_class.from_hash(Yajl::Parser.parse(js_pathname.first.read))
+          if Chef::VERSION.start_with? "12"
+            instance = chef_class.from_hash(Yajl::Parser.parse(js_pathname.first.read))
+          else
+            instance = chef_class.json_create(Yajl::Parser.parse(js_pathname.first.read))
+          end
         end
 
         instance ? instance.to_hash : nil