Merge pull request #509 from oracle/mark/slack

add slack invite details

Author: rjeberhard

README.md

@@ -222,9 +222,13 @@ Replace `NAMESPACE` with the namespace that the operator is running in.
 
 To remove more than one operator, repeat these steps for each operator namespace.
 
+## Need more help?
+
+We have a public Slack channel where you can get in touch with us to ask questions about using the operator.  To join our channel, please [visit this site to get an invitation](https://weblogic-slack-inviter.herokuapp.com/).  The invitation email will include details of how to access our Slack workspace.  After you are logged in, please come to #operator and say, "hello!"
+
 # Developer guide
 
-Developers interested in this project are encouraged to read the [Developer guide](site/developer.md) to learn how to build the project, run tests, and so on.  The Developer guide also provides details about the structure of the code, coding standards, and the Asynchronous Call facility used in the code to manage calls to the Kuberentes API.
+Developers interested in this project are encouraged to read the [Developer guide](site/developer.md) to learn how to build the project, run tests, and so on.  The Developer guide also provides details about the structure of the code, coding standards, and the Asynchronous Call facility used in the code to manage calls to the Kubernetes API.
 
 Please take a look at our [wish list](https://github.com/oracle/weblogic-kubernetes-operator/wiki/Wish-list) to get an idea of the kind of features we would like to add to the operator.  Maybe you will see something you would like to contribute to!