Merge pull request #21 from NHSDigital/mm-mesh-1478-mesh-code-splitting

mesh-1478: updated install instructions

Author: matt-mercer

README.md

@@ -8,10 +8,8 @@ some useful boto3 utilities
 contributors see [contributing](CONTRIBUTING.md)
 
 ### installing
-install the fully portable whl in releases 
-see [releases](https://github.com/NHSDigital/nhs-aws-helpers/releases) for the latest release
 ```shell
-pip install https://github.com/NHSDigital/nhs-aws-helpers/releases/download/v0.0.12/nhs_aws_helpers-0.0.12-py3-none-any.whl
+pip install nhs-aws-helpers
 ```
 
 ## testing