ISSUE: Default button behavior doesn't match docs

[nanderson11]

In the docs here, it says that button has a default type of 'button'. In the code here though, it looks like button defaults to no type at all.

So html()->button('Add Another Item') yields HTML like this <button>Add Another Item</button>, when it should be <button type="button">Add Another Item</button> (if the documentation is correct). The type attribute matters because if the HTML is missing the type attribute, it defaults to submit.