fix: added missing dependency and installation instruction (#895)

Signed-off-by: Simon Schrottner <[email protected]>

Author: aepfli

tools/junit-openfeature/README.md

@@ -2,6 +2,18 @@
 
 A JUnit5 extension to reduce boilerplate code for testing code which utilizes OpenFeature.
 
+## Installation
+<!-- x-release-please-start-version -->
+```xml
+<dependency>
+  <groupId>dev.openfeature.contrib.tools</groupId>
+  <artifactId>junitopenfeature</artifactId>
+  <version>0.0.0</version>
+  <scope>test</scope>
+</dependency>
+```
+<!-- x-release-please-end-version -->
+
 ## Getting Started
 
 We are supporting two different flavors for testing, a [simple](#simple-configuration) and an [extended](#extended-configuration) configuration.

tools/junit-openfeature/pom.xml

@@ -33,6 +33,12 @@
             <scope>provided</scope>
         </dependency>
 
+        <dependency>
+            <groupId>org.apache.commons</groupId>
+            <artifactId>commons-lang3</artifactId>
+            <version>3.15.0</version>
+        </dependency>
+
         <dependency>
             <groupId>org.junit.jupiter</groupId>
             <artifactId>junit-jupiter-api</artifactId>