Update README.md

README.md

@@ -17,10 +17,15 @@ Program has been tested using Python 3.7 on Windows, macOS, and Ubuntu Linux 18.
 ## Usage:
 
 ```
-livermask --input path-to-nifti.nii --output path-to-output-file.nii
+livermask --input path-to-input --output path-to-output
 ```
 
-In addition, there is the optional `--cpu` action to disable the GPU (force computations on CPU only) if necessary.
+| command | description |
+| ------------- | ------------- |
+| `--input` | the full path to the input data. Could be nifti file or directory (if directory is provided as input) |
+| `--output` | the full path to the output data. Could be either output name or directory (if directory is provided as input)  |
+| `--cpu` | to disable the GPU (force computations on GPU only) |
+| `--verbose` | to enable verbose |
 
 ## DICOM/NIfTI format
 Pipeline assumes input is in the NIfTI format, and output a binary volume in the same format (.nii).