add PyPI installation to README

https://pypi.org/project/hypernode-api-python/

Author: vdloo

README.md

@@ -16,7 +16,7 @@ pip install -r requirements/development.txt
 
 ### Acquiring an API token
 
-Each Hypernode has an API token associated with it, you can use that to talk to the API directly. You can find the token in `/etc/hypernode/hypernode_api_token`. For API tokens with special permissions please contact [email protected].
+Each Hypernode has an API token associated with it, you can use that to talk to the API directly. You can find the token in `/etc/hypernode/hypernode_api_token`. For API tokens with special permissions please contact [email protected]. Not all functionality in the API is currently generally available but if you'd like to start automating and have an interesting use-case we'd love to hear from you.
 
 
 ### Installing the library in your project
@@ -27,6 +27,15 @@ pip install -e git+https://github.com/byteinternet/hypernode-api-python.git@mast
 ```
 Of course you might want to put that in a `requirements.txt` file in your project instead of installing it manually.
 
+Alternatively, you can also install the [hypernode-api-python library from PyPI](https://pypi.org/project/hypernode-api-python/):
+```
+$ python3 -m venv venv
+$ . venv/bin/activate
+$ pip install hypernode-api-python
+$ pip freeze | grep hypernode-api-python
+hypernode-api-python==0.0.1
+```
+
 ###  Performing API calls
 
 Then to use the API client you can test out an example request in your Python repl: