updated readme

README.md

@@ -1,2 +1,25 @@
 # TableScraper.jl
-Easy to scrape tables from webapges
+
+In this package there is only one function
+
+`scrape_tables(url)`
+
+which lets you scrape for tables wrapped in `<table>` tag and return them in a [Tables.jl](https://github.com/JuliaData/Tables.jl) compatible row-table.
+
+By default the function uses `Cascadia.nodeText` to extract the text from each `<td>` node.
+
+However, if you wish to extract more than the text node you may use
+
+```
+scrape_tables(url, identity)
+```
+
+to keep the cells as `Gumbo.HTMLNode`s and do more advanced extraction.
+
+Also, you can put any call into the `cell_transform` argument to do custome transformation of the `<td>` nodes before returning.
+
+E.g.
+
+```
+scrape_tables(url, cell_transform)
+```