I don't even want to know why psych is failing with errors like this one:

```
`@vendor/rails' is not allowed as an instance variable name (NameError)
```

Author: ttilley

lib/braid/config.rb

@@ -1,4 +1,9 @@
 require 'yaml'
+
+# psych throws such wonderful errors as: 
+#  `@vendor/rails' is not allowed as an instance variable name (NameError)
+YAML::ENGINE.yamler = 'syck' if RUBY_VERSION >= '1.9.1'
+
 require 'yaml/store'
 
 module Braid