Include documentation on website and utils.

utils/HOUSEKEEPING.md

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+This contains documentation on `housekeep.py` which was a command developed for converting from legacy README
+format to the new format. This is not used anymore.
+
+
+## Getting started
+
+### Setup
+1) Copy ```config-sample.py``` to ```config.py```
+
+```bash
+  cp config-sample.py config.py
+```
+2) Get a GoodReads API key [here](https://www.goodreads.com/api/keys)
+3) Copy your public key to the ```config.py``` file
+
+### Converting
+
+Run
+
+```bash
+  python3 housekeep.py --file_type='old'
+```
+
+The ``--file_type='old'`` flag is needed if the books are displayed in the old format (in a list). New format is the default (when the records are displayed in tables).
+
+This will convert to the new format and save it to ``README-new.md``.
+
+**Note!** the first conversion can take some time, we wait 1 second between each request to GoodReads to not abuse the API.
+After the first generation only missing records will be tried to be retrieved.
+
+Run to see the available arguments
+```bash
+  python3 housekeep.py --help
+```