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README.md

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+# Mike's Backup Diff
+
+This is a tool to help show differences between a source folder, and its mirrored backup folder. It will show you which directories and files are missing or different between the two folder.
+
+This can be very useful to detect files which may have been *accidentally deleted* from your source folder, so you can replace them from your backup before running another mirror.
+
+## Requirements 
+
+* Python 3
+
+* Python library *humanfriendly*
+
+    ``` sudo pip3 install humanfriendly ```
+
+## How to Execute
+
+Invoking the python3 interpreter directly is preferred:
+
+```python3 /path/to/backup-diff.py```
+
+But you can possibly also execute it directly, if your *env* program is setup for Python 3:
+
+```/path/to/backup-diff.py```
+
+## Command Line Arguments
+
+You must at minimum specify the source and the backup directories. Following is a list of currently accepted command line arguments:
+
+### --source-path < path >
+
+Specifies the path to your source directory
+
+### --backup-path < path >
+
+Specifies the path to your backup directory
+
+### --no-clean
+
+Don't make any attempt to clean the generated report of redundant entries. This might be useful if you think the report isn't accurate.
+
+#### Example Call With Arguments
+
+Here's an example of how you might invoke the script:
+
+```python3 /path/to/backup-diff.py --source-path "/my/source/directory/path" --backup-path "/my/backups/main-backup" ```
+
+