Update README.md
Without zip project will not build.
@@ -88,6 +88,7 @@ components in the Pulsar ecosystem, including connectors, adapters, and other la
Requirements:
* Java [JDK 11](https://adoptopenjdk.net/?variant=openjdk11) or [JDK 8](https://adoptopenjdk.net/?variant=openjdk8)
* Maven 3.6.1+
+ * zip
Compile and install:
