examples of custom modules, custom module and readme doc updates

docs/sample-custom-modules/sample-wellness-module/module.yaml

@@ -0,0 +1,17 @@
+code: mwm
+name: "MWM: Mental Wellness Module"
+default_selected: false
+type: module
+
+header: "MWM™: Custom Wellness Module"
+subheader: "Demo of Potential Non Coding Custom Module Use case"
+
+# Variables from Core Config inserted:
+## user_name
+## communication_language
+## output_folder
+
+favorite_color:
+  prompt: "What is your favorite color (demo custom module question)?"
+  default: "Green"
+  result: "{value}"