Edit in JSFiddle

<form action="#">
	<div class="form-row">
		<label for="email">email</label>
		<input data-errormessage-value-missing="Please enter your email adress." data-errormessage-type-mismatch="Your email is not correct." required="" type="email" id="email" />
	</div>
	<div class="form-row">
		<input type="submit" />
	</div>
</form>

webshim.setOptions('forms', {
	//show custom styleable validation bubble
	replaceValidationUI: true,
    lazyCustomMessages: true
});

//start polyfilling
webshim.polyfill('forms');