Fix :wrapper_html :class and :button_html :class options

This appears to fix the options functionality retaining both :wrapper_html and :button_html options without actually wrapping the action in another tag.
Only tested with class and ensured that id also remains but not sure what it does with other options.

Default class is "btn"
:wrapper_html => { :class => "wrapper-option" } is prefixed with the default and results in class="btn wrapper-option"
:button_html => { :class => "button-option" } will specify the whole class value and results in class="button-option"
Merge pull request #78 from nickl-/master

Fix :wrapper_html :class and :button_html :class options
Change close in alert from button to link so pressing enter in form still submits the form
Merge pull request #84 from anark/still-submit-forms-on-enter

Change close in alert from button to link so pressing enter in form stil...
Converts "control-group" to "form-group".

This is work to support Bootstrap 3.  Take the elements which had
a "control-group" class added and change it to "form-group". Change
the method names to reflect this.
Removes generation of the class "control-label".

This is work to support Bootstrap 3. In this version the "control-label"
is dropped.  We no longer create it and change the name of the methods
to reflect this change.
Removes the controls_wrapping method.

This is work to support Bootstrap 3.  Remove the controls_wrapping
method as Bootstrap 3 eliminates this entirely.
Adds "form-control" class where required.

This is work to support Bootstrap 3.  In this version "form-control"
is added.

I needed to do some interpretation about how datetime_select and
friends should work.  It sort of works now, but only on FireFox:
WebKit browsers seem to ignore the "height" attribute added in the
CSS.  I might revisit this at some point -- it's pretty annoying.
Creates correct checkbox markup for Bootstrap 3.
Creates correct radio button  markup for Bootstrap 3.
Updates the README ... somewhat.
v3.0.0.rc.1
Merge pull request #86 from mjbellantoni/bootstrap3_and_rails4

Add support for Bootstrap 3
Fixes error validation state.

This adds necessary classes for both form and form field errors. These
had changed between Bootstrap 2 and 3.
v3.0.0.rc.2
Merge pull request #87 from mjbellantoni/fix_form_errors

Fixes error validation states.
add in the hidden text field for boolean fields
Merge pull request #91 from danklassen/fix-checkbox-hidden-field

add in the hidden text field for boolean fields
Remove hacks in Timeish inputs.

- puts all the :year, :month, and other columns into `div.row`.
- also fixes the grid column styling - date input fragments should fill in whole 12 grid units (see: `Timeish::FRAGMENT_CLASSES`, `DateSelectInput::FRAGMENT_CLASSES`, `TimeSelectInput::FRAGMENT_CLASSES`
Fix showing .form-control class of CountryInput.