updated README.md with checkbox field options

README.md

@@ -80,26 +80,30 @@ state.
 </div>
 ```
 
-### Checkbox and Radio Fields
+### Checkbox and Radio Fields {#checkbox-and-radio-fields}
 
 - Wrap all options in a `<fieldset>` element and add the `form-group` class to
 it instead of the individual options.
 - The `<legend>` tag may be used to give the option set a heading.
-- Each `checkbox` or `radio` `<input>` type should be wrapped in a
+- [Field Options](#field-options) are shared amongst all inputs in a check or
-`form-group__item` class. This class is not used programattically, and is only
+radio group. Your options only need to be applied to one of the inputs in the
-used for styling.
+group that shares a `name` attribute.
 
 ```html
 <fieldset class="form-group">
     <legend>Check Group</legend>
     <span class="form-group__item">
-        <input id="checkbox-1" type="checkbox" name="checks">
+        <input data-validation='{"minChecks": 2, "optional": true}' id="checkbox-1" type="checkbox" name="checks">
         <label for="checkbox-1">Checkbox 1</label>
     </span>
     <span class="form-group__item">
         <input id="checkbox-2" type="checkbox" name="checks">
         <label for="checkbox-2">Checkbox 2</label>
     </span>
+    <span class="form-group__item">
+        <input id="checkbox-3" type="checkbox" name="checks">
+        <label for="checkbox-3">Checkbox 3</label>
+    </span>
 </fieldset>
 ```
 
@@ -407,8 +411,10 @@ or [`input`](https://developer.mozilla.org/en-US/docs/Web/API/Element/input_even
 > Individual field validation can be disable by setting
 [`onlyOnSubmit`](#onlyOnSubmit) to true.
 
-## Field Options
+## Field Options {#field-options}
 
+* [maxCount](#maxcount)
+* [minCount](#mincount)
 * [optional](#optional)
 * [pattern](#pattern)
 * [patternMessage](#patternmessage)
@@ -429,6 +435,24 @@ properly formatted JSON object with the properties and values below.
 </div>
 ```
 
+### maxCount (Checkboxes Only)
+
+**Default:** `null`
+
+Checkbox groups with the `maxCount` property set to an integer will fail validation
+if the number of checked inputs is over this limit.
+
+> See [here](#checkbox-and-radio-fields) for more information on how to apply options to checkboxes.
+
+### minCount (Checkboxes Only)
+
+**Default:** `1`
+
+Checkbox groups with the `minCount` property set to an integer will fail validation
+if the number of checked inputs is under this limit.
+
+> See [here](#checkbox-and-radio-fields) for more information on how to apply options to checkboxes.
+
 ### optional
 
 **Default:** `false`

index.html

@@ -62,7 +62,7 @@
                                         <label for="checkbox-1">Checkbox 1</label>
                                     </span>
                                     <span class="form-group__item">
-                                        <input data-validation='{"optional": false}' id="checkbox-2" type="checkbox" name="checks">
+                                        <input id="checkbox-2" type="checkbox" name="checks">
                                         <label for="checkbox-2">Checkbox 2</label>
                                     </span>
                                     <span class="form-group__item">