```ruby
require File.dirname(__FILE__) + '/mkrf/availability'
require File.dirname(__FILE__) + '/mkrf/generator'

Mkrf::VERSION = "0.2.2"
```

Bump up version numbers for new gem release
user
```ruby
require File.dirname(__FILE__) + '/mkrf/availability'
require File.dirname(__FILE__) + '/mkrf/generator'

Mkrf::VERSION = "0.2.3"
```
assistant