title: How to have table in Shiny filled by user?
body: <p>I want users of my Shiny app to fill in the values of a 2x2 table with row and column names. Of course, I could do it with 4 input boxes, but I assume that it will be tricky to position everything neatly. Despite that, I would prefer a table layout such as the one provided by the <code>DT</code> package. Thus, my question is: Is it possible to have a <code>datatable</code> (or something similar) filled by the user?</p>