Add instruction for pulling in all dependencies
The README currently advises to install using plain `pip install meshio` which leads to issues like Add instruction to use `meshio[all]` if desired.
@@ -103,6 +103,11 @@ pip install -U meshio
```
to install or upgrade.
+Additional dependencies (`netcdf4`, `h5py` and `lxml`) are required for some of the output formats and can be pulled in by:
+
+```
+pip install -U meshio[all]
+```
### Testing
