update readme

README.md

@@ -7,11 +7,25 @@ Simply run the command `go get github.com/datahearth/ddnsclient`
 ## Run the client
 
 You have 2 options to run the DDNS client.  
-You can either run it as a docker container:
-`PENDING...`  
-Or as binary executable:
-`PENDING...`
+You can run it as: 
+- docker container:
+`docker run -v /path/to/config/ddnsclient.yaml:/ddnsclient.yaml --name ddnsclient datahearth/ddnsclient:latest`  
+
+- binary executable:
+`./ddnsclient` (make sure the config is in the same directory with the name `ddnsclient.yaml`)
 
 ## Supported providers
 
-- OVH (list of available [regions](https://github.com/ovh/php-ovh/#supported-apis). TO BE CHECKED HOW TO SHIT WORKS) 
+- OVH
+- Google (only one subdomain accepted for now)
+
+Note: For now, ddnsclient supports only one credential for each provider.
+
+## Use the library
+
+You can also plug the library to your own system. Just get the module and you'll find everything needed to start it.
+If something is missing or is not working properly, please create an issue so I can fix it.
+
+## Contributing
+
+You can contribute to the project by submitting an issue and resolve issues by creating PRs. I'll look at them and validate your changes if they're correct.