Update README.md (#55)

README.md

@@ -10,6 +10,7 @@
 - Shared `poetry.lock` file across multiple projects in a monorepo
 - Shared virtual environment across multiple projects in a monorepo
 - Rewrite path dependencies during `poetry build`
+- Compatible with both Poetry v1 and v2
 
 ## Installation
 
@@ -70,6 +71,10 @@ Ensures that the shared lock file (located at the root) is up-to-date irrespecti
 
 Installs dependencies for all projects in the monorepo, ensuring that the shared virtual environment is used. As before, this command can be run from any directory within the monorepo without needing to switch to the root directory.
 
+- `poetry sync` (v2 only):
+
+Installs dependencies for all projects in the monorepo, ensuring that the shared virtual environment is used, removing any dependencies that do not exist in the lockfile. As before, this command can be run from any directory within the monorepo without needing to switch to the root directory.
+
 - `poetry update`:
 
 Updates the provided dependency (or all dependencies of **current** project if none provided). This will update the shared lock file as well as installing the updated dependencies in the shared virtual environment.