add some sql

lib/App/MarkFiles.pm

@@ -111,6 +111,19 @@ sub create_mark_db {
       path text,
       datetime text
     );
+
+    CREATE TABLE things (
+      id integer primary key,
+      address text
+    );
+
+    CREATE TABLE links (
+      id integer primary key,
+      from_thing integer,
+      to_thing integer,
+      created text,
+      updated text
+    );
 SQL
   );
 }