Merge pull request #472 from gardenlinux/issue-471

solves issue 471: CII badge added to README.md

README.md

@@ -17,6 +17,8 @@
 </p>
 <hr />
 
+[![CII Best Practices](https://bestpractices.coreinfrastructure.org/projects/3925/badge)](https://bestpractices.coreinfrastructure.org/projects/3925)
+
 Garden Linux is a [Debian](https://debian.org) derivate that aims to provide a small, auditable linux image for most Cloud Providers and Bare Metal.
 
 ## Features:
@@ -119,4 +121,4 @@ Garden Linux frequently publishes snapshot releases. These are available as mach
 file-system images for manual import. See the [releases](docs/releases.md) page for more info.
 
 ## Pipeline Integration
-Garden Linux can build in an automated way for continous integration. See [ci/README.md](ci/README.md) for details.
+Garden Linux can build in an automated way for continous integration. See [ci/README.md](ci/README.md) for details.