Update README.md

README.md

@@ -34,10 +34,12 @@ Notebooks should be placed according to their intended usage. New directories ca
 ```
 .
 ├── analysis
+│   ├── fiber_tracking
 │   └── structure_orientation
 ├── data
 ├── detection
 ├── reconstruction
+│   └── phase
 ├── resources
 │   ├── img2d
 │   ├── img3d