Document the SQLit3 abstraction API

Signed-off-by: Shawn Webb <shawn.webb@hardenedbsd.org>

README.md

@@ -25,7 +25,7 @@ Do not terminate the log message with a newline.
 
 Sample syslog logging code:
 
-```
+```C
 #include <liblattutil.h>
 
 lattutil_log_t *logp;
@@ -45,3 +45,46 @@ logp->ll_log_info(logp, 2, "This debugging message will get ignored"
 logp->ll_log_info(logp, 5, "This will get logged");
 lattutil_log_free(&logp);
 ```
+
+## SQLite3 Queries
+
+liblattutil has a SQLite3 abstraction layer. Right now, it only
+supports those data types that I myself care about. I'm open to
+accepting patches for supporting unimplemented data types.
+
+The sqlite3 APIs also support the logging APIs described above. When
+creating a sqlite3 context, you have the option of specifying a
+logging context object. Error, info, and debugging messages will be
+reported through the logging object.
+
+Sample sqlite3 code:
+
+```C
+#include <liblattutil.h>
+
+lattutil_sqlite_query_t *query;
+lattutil_sqlite_ctx_t *ctx;
+const ucl_object_t *row;
+
+ctx = lattutil_sqlite_ctx_new("/tmp/db.sqlite3", NULL, 0);
+if (ctx == NULL) {
+	Fatal();
+}
+
+query = lattutil_sqlite_prepare(ctx, "SELECT id FROM table WHERE id = ?");
+if (query == NULL) {
+	Fatal();
+}
+
+if (!lattutil_sqlite_bind_int(query, 1, 1234)) {
+	Fatal();
+}
+
+if (!lattutil_sqlite_exec(query)) {
+	Fatal();
+}
+
+row = lattutil_sqlite_get_row(query, 0);
+
+printf("ID: %ld\n", lattutil_sqlite_get_column_int(row, 0, 0));
+```