Various fixes

README.md

@@ -1 +1,22 @@
 # tp-table
+
+Displays a list of items in a interactive table.
+
+## Defining columns
+
+The `columns` property is an array of objects that define the columns of the table.
+
+Each column object has the following properties:
+
+- `label`: The label of the column.
+- `name`: The name of the column. This is the property name within the item object that is currently being displayed.
+- `width`: The width of the column in pixels. Should be a string like `100px`.
+- `required`: Whether the column is required. Required columns are always visible.
+- `visible`: Whether the column is visible by default.
+- `sortable`: Whether the column is sortable.
+
+## Custom table elements
+
+To override the default table column headers you can override the `renderColumnHeader(column, idx)` method.
+
+To override the default cell elements you can override the `renderItem(item, idx, columns, selected)` method.