fix sources location

src/lib.rs

@@ -0,0 +1,19 @@
+mod line;
+
+#[cfg(test)]
+mod tests {
+    use super::line::header::{Header, Level};
+
+    #[test]
+    fn h1() {
+        match Header::from("# H1") {
+            Some(h1) => {
+                assert_eq!(h1.level as i32, Level::H1 as i32); // @TODO
+                assert_eq!(h1.value, "H1");
+            }
+            None => assert!(false),
+        };
+    }
+
+    // @TODO other tags
+}