TTLs, requirements and re2O validation.

README.md

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+# Re2o Gandi DNS
+
+This is a small script that can be the interface between Re2o and Gandi for the DNS.
+So far it manages:
+
+* A records
+* AAAA records
+* CNAME records
+* Origin record
+
+more can be added but I did not need them.
+
+The script keeps track of the records it can manage in toml files in `last_updates`, so that it won't delete records that you add manually in Gandi interface if they don't exist in Re2o.
+
+## Usage
+
+```
+Usage: main.py [OPTIONS]
+
+Options:
+  --config-dir TEXT       Configuration directory.
+  --dry-run / --complete  Performs a dry run.
+  --keep / --update       Update service status on Re2o. Won't update if it is
+                          a dry-run.
+
+  --help                  Show this message and exit.
+
+```
+
+## Installation
+
+Clone the repository (e.g. in `/usr/local/dns`) the install the requirements (with pip for example : `pip install -r requirements.txt`) and it's done.
+
+You can also setup a cron to run this on a regular basis.