Adds ways to get involved. (#616)

README.md

@@ -46,7 +46,16 @@ See also [rules_docker](https://github.com/bazelbuild/rules_docker) for a simila
 
 See the [Frequently Asked Questions (FAQ) wiki page](/../../wiki/Frequently-Asked-Questions-(FAQ)).
 
-## Community
+## Get involved with the community
 
+We welcome contributions! Here's how you can contribute:
+
+* [Browse issues](https://github.com/GoogleContainerTools/jib/issues) or [file an issue](https://github.com/GoogleContainerTools/jib/issues/new)
 * Chat with us on [gitter](https://gitter.im/google/jib)
-* [jib-users mailing list](https://groups.google.com/forum/#!forum/jib-users)
+* Join the [jib-users mailing list](https://groups.google.com/forum/#!forum/jib-users)
+* Contribute:
+  * Try to fix [good first issues](https://github.com/GoogleContainerTools/jib/labels/good%20first%20issue)
+  * Help out on [issues that need help](https://github.com/GoogleContainerTools/jib/labels/help%20wanted)
+  * Join in on [discussion issues](https://github.com/GoogleContainerTools/jib/labels/discuss)
+<!--  * Read the [style guide] -->
+*Make sure to follow the [Code of Conduct](https://github.com/GoogleContainerTools/jib/blob/master/CODE_OF_CONDUCT.md) when contributing so we can foster an open and welcoming community.*