Wrote README.md

README.md

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 # Godot Table Container
 
 A Godot plugin that provides a container type that serves as a table.
+I wrote this because the current options for tabular data were insufficient for my use cases.
 
-WIP
+`GridContainer` was close, but the fact that all the elements must be children of the container created some limitations.
+First, there is no concept of discrete rows, so it was awkward to add sets of nodes as a row to it.
+Second, because of the above, while I was able to instantiate a row scene and then reparent the children to it, the row itself, with any scripting I might have, would be lost.
+
+Combining `VBoxContainer` and `HBoxContainer` is effectively what I do here, but the initial limitation is that the columns do not stay in alignment.
+That's basically what this does.
+
+## Features
+
+* Keeps columns (i.e. `Control` nodes within each `HBoxContainer`) in alignment
+* Has optional auto-update in the game and in the editor
+* Has property to seet horizontal and vertical spacing overrides to the entire table
+
+## Limitations
+
+Anything that's not listed above.
+Rows must be the same length.
+
+## Development
+
+I'm planning to put this to use in another project, and as I see the need, I may extend this.
+It's primarily for my own use, but since I didn't see anything quite like it out there and I've seen it asked about, I figured I'd share!