Corrects some markdown properties, identation and text

README.md

@@ -256,37 +256,34 @@ end
 If you would like to add meta information to the outputted JSON, use the `:meta`
 option:
 
-```
-render :json => @posts, :serializer => CustomArraySerializer,
-:meta => {:total => 10}
+```ruby
+render :json => @posts, :serializer => CustomArraySerializer, :meta => {:total => 10}
 ```
 
 The above usage of `:meta` will produce the following:
 
-```
+```json
 {
-  meta: { total: 10
-  },
-  posts: [
+  "meta": { "total": 10 },
+  "posts": [
     { "title": "Post 1", "body": "Hello!" },
     { "title": "Post 2", "body": "Goodbye!" }
   ]
 }
 ```
 
-If you would like to to change the attribute name you can use the `meta_key` option:
+If you would like to change the meta key name you can use the `meta_key` option:
 
-```
+```ruby
 render :json => @posts, :serializer => CustomArraySerializer, :meta => {:total => 10}, :meta_key => 'meta_object'
 ```
 
 The above usage of `:meta_key` will produce the following:
 
-```
+```json
 {
-  meta_object: { total: 10
-  },
-  posts: [
+  "meta_object": { "total": 10 },
+  "posts": [
     { "title": "Post 1", "body": "Hello!" },
     { "title": "Post 2", "body": "Goodbye!" }
   ]