README.md in mutex_m-0.1.0 vs README.md in mutex_m-0.1.1

@@ -20,30 +20,31 @@
 
 ## Usage
 
 Start by requiring the standard library Mutex_m:
 
+```ruby
+require "mutex_m.rb"
 ```
-  require "mutex_m.rb"
-```
 
 From here you can extend an object with Mutex instance methods:
 
+```ruby
+obj = Object.new
+obj.extend Mutex_m
 ```
-  obj = Object.new
-  obj.extend Mutex_m
-```
 
 Or mixin Mutex_m into your module to your class inherit Mutex instance methods.
 
+```ruby
+class Foo
+  include Mutex_m
+  # ...
+end
+
+obj = Foo.new
+# this obj can be handled like Mutex
 ```
-  class Foo
-    include Mutex_m
-    # ...
-  end
-  obj = Foo.new
-  # this obj can be handled like Mutex
-g```
 
 ## Development
 
 After checking out the repo, run `bin/setup` to install dependencies. Then, run `rake test` to run the tests. You can also run `bin/console` for an interactive prompt that will allow you to experiment.