Rewrite to use embed.FS and sqlx.

README.md

@@ -1,2 +1,13 @@
 # simplesql
+simplesql is a Go library to simplify using prepared statements.  It is built on top of [sqlx](https://jmoiron.github.io/sqlx/).
 
+## Use
+To use simplesql, embed a directory of files in a Go program.  Call simplesql.Prepare with the embedded FS.
+
+* The embedded directory is expected to be named "sqlq".
+* Files must have the extension ".sql".
+* Queries must be written using [named parameters](https://jmoiron.github.io/sqlx/#namedParams).
+
+After calling Prepare successfully, a Stmts type is returned.  This maps the file name to the prepared statement in the file.
+
+See [the test package](./simplesql_test) for a working example.