Add badges and usage.

README.md

@@ -1,5 +1,46 @@
 # OpenFeature SDK for Java
 
-This is an experimental Java SDK. The main motivation at the moment is to square away the API surface area to 
-ensure the work we're doing in typescript can be replicated in a less flexible language. This may become the official
-Java SDK eventually, but now is not that time.
+[![Project Status: WIP – Initial development is in progress, but there has not yet been a stable, usable release suitable for the public.](https://www.repostatus.org/badges/latest/wip.svg)](https://www.repostatus.org/#wip)
+[![Known Vulnerabilities](https://snyk.io/test/github/open-feature/java-sdk/badge.svg)](https://snyk.io/test/github/open-feature/java-sdk)
+[![on-merge](https://github.com/open-feature/java-sdk/actions/workflows/merge.yml/badge.svg)](https://github.com/open-feature/java-sdk/actions/workflows/merge.yml)
+[![codecov](https://codecov.io/gh/open-feature/java-sdk/branch/main/graph/badge.svg?token=XMS9L7PBY1)](https://codecov.io/gh/open-feature/java-sdk)
+
+
+This is the Java implementation of [Open Feature](https://openfeature.dev). It is intended to be used in server-side contexts and has not been evaluated for use in mobile devices.
+
+## Usage
+
+There are a variety flag types that we offer, but `Boolean` provides the simplest introduction. We can use this SDK to 
+
+```java
+class MyClass {
+    // ...
+    public void myFunction() {
+        if (client.getBooleanValue("redesign_enabled", false)) {
+            return render_redesign();
+        }
+        return render_normal();
+    }
+    // ...
+}
+```
+
+## Requirements
+- Java 11
+
+## Installation
+TODO
+## Contacting us
+We hold regular meetings which you can see [here](https://github.com/open-feature/community/#meetings-and-events).
+
+We are also present on the #openfeature channel in the [CNCF slack](https://slack.cncf.io/).
+
+## Contributors
+
+Thanks so much to our contributors.
+
+<a href="https://github.com/open-feature/java-sdk/graphs/contributors">
+  <img src="https://contrib.rocks/image?repo=open-feature/java-sdk" />
+</a>
+
+Made with [contrib.rocks](https://contrib.rocks).