cleaner setter of this.model on constructor
- Added capitalize() to prototype of String
- now, default placeholder capitalizes attribute and displays it separated by spaces if it's with underscore. example: if the attribute is id_number, the default placeholder is 'Id number'
added checkbox tag.
changed checkbox_tag to checkbox
Now selects display by default the selected value. (you pass selected="selected" to the option on the select list)
Added f.checkbox method usage.
Merge pull request #1 from macool/master

changed placeholder.