doc update

README.md

@@ -99,6 +99,39 @@ In material submenu you have mutliple new entry:
 
 - Load Color palette : same as the load above exept it loads directly from a blend file (all the material that the blend contains)
 
+- Clean materials
+
+**Shortcuts**
+
+Viewport:
+
+  - Layer Picker from closest stroke in paint mode using quick press on `W` for stroke (and `alt+W` for fills)
+
+  - Material Picker (`S` and `Alt+S`) quick trigger, change is only triggered if key is pressed less than 200ms
+
+  - `F2` in Paint and Edit to rename active layer
+
+  - `Insert` add a new layer (same as Krita)
+
+  - `Shift + Insert` add a new layer and immediately pop-up a rename box
+
+  - `page up / page down` change active layer up/down with a temporary fade (settings in addon prefs)
+
+  - `Shift + E` breakdown animation in object Mode
+
+  - `Ctrl + Shift + X/C/V` - Worldspace cut/copy/paste selected strokes/points:
+
+Dopesheet:
+
+  - `Ctrl + Shift + X` Cut and send to layer
+  
+  - `Ctrl + Shift + D` Duplicate and send to layer
+
+Sculpt:
+
+  - point/stroke filter shortcut on `1`, `2`, `3` as toggles (similar to edit mode native shortcuts)
+
+
 ### Where ?
 
 Panel in sidebar : 3D view > sidebar 'N' > Gpencil