customize session controller issue

when i write 

``` ruby
cassy :controller => :sessions
```

it gives me following error

```
/home/prashant/.rvm/gems/ruby-1.9.3-p374@rails4/bundler/gems/cassy-cfd7dfad7902/lib/cassy/routes.rb:8:in `[]': can't convert Symbol into Integer (TypeError)
```

after debugging the code, i found that it should be written as

``` ruby
cassy :controller => { :sessions => :sessions }
```
