ksylvest/formula — pull request #3 by iliya-gr (2011-12-28 05:33:03+00:00)
Title: CSS class assignment improvements.

1. Removed method name from block class.
This behaviour was not documented.

```ruby
# Usage:
#
# f.input(:name)
# ...
# Equivalent:
#
#

# ...
```
And more importantly, method names likely would be defined as style classes for non form elements.

2. Replaced default error wrapper with empty.

3. Added block_error_class for blocks with errors.

4. Prevent hidden field from wrapping.