Update README.md

Author: SentryMan

README.md

@@ -15,6 +15,11 @@ to generate adapter code for Javalin and Helidon SE/Nima.
 
 #### 1. Add dependencies
 ```xml
+<dependency>
+  <groupId>io.avaje</groupId>
+  <artifactId>avaje-inject</artifactId>
+  <version>${avaje-inject.version}</version>
+</dependency>
 <dependency>
   <groupId>io.avaje</groupId>
   <artifactId>avaje-http-api</artifactId>