infinite recursion

Nobody has claimed this yet.

The following programme fails (tested in 3.6.0 because of issue #1):

```
require 'cachetastic'

class MyCache < Cachetastic::Cache; end
MyCache.set(1, 'hello')
```

The reported error:

```
vendor/ruby/gems/cachetastic-3.6.0/lib/cachetastic/cache.rb:127: stack level too deep (SystemStackError)
```

The code around cache.rb:127:

```
module Cachetastic
class Cache
include Singleton
...
def to_configatron(*args) # :nodoc:
self.class.to_configatron(*args)
end
...
end
end
```

I don't know what this is supposed to do, but it results in `to_configatron` to be called recursively. I can fix this is my code by overriding `to_configatron`.

Am I missing something?

Reproduce the example from the issue, then inspect vendor/ruby/gems/cachetastic-3.6.0/lib/cachetastic/cache.rb around line 127 and the to_configatron method. Trace the instance-to-class delegation and determine the expected behavior; the sample should complete without a SystemStackError or recursive to_configatron calls.

Written by the indexing model from the issue text.