Updated README with function features

README.adoc

@@ -19,6 +19,16 @@ It abstracts away all of the transport details and
 infrastructure, allowing the developer to keep all the familiar tools
 and processes, and focus firmly on business logic.
 
+*Features*
+
+In the nutshell Spring Cloud Function provides the following features:
+
+* _Choice of programming styles - reactive, imperative or hybrid._
+* _Function composition and adaptation (e.g., composing imperative functions with reactive)._
+* _Support for reactive function with multiple inputs and outputs allowing merging, joining and other complex streaming operation to be handled by functions._
+* _Transparent type conversion of inputs and outputs._
+* _Packaging functions for deployments, specific to the target platform (e.g., Project Riff, AWS Lambda and more)_
+
 Here's a complete, executable, testable Spring Boot application
 (implementing a simple string manipulation):
 
@@ -392,4 +402,4 @@ Go to `File` -> `Settings` -> `Other settings` -> `Checkstyle`. There click on t
 - `checkstyle.suppressions.file` - default suppressions. Please point it to the Spring Cloud Build's, `spring-cloud-build-tools/src/checkstyle/checkstyle-suppressions.xml` file either in your cloned repo or via the `https://raw.githubusercontent.com/spring-cloud/spring-cloud-build/master/spring-cloud-build-tools/src/checkstyle/checkstyle-suppressions.xml` URL.
 - `checkstyle.additional.suppressions.file` - this variable corresponds to suppressions in your local project. E.g. you're working on `spring-cloud-contract`. Then point to the `project-root/src/checkstyle/checkstyle-suppressions.xml` folder. Example for `spring-cloud-contract` would be: `/home/username/spring-cloud-contract/src/checkstyle/checkstyle-suppressions.xml`.
 
-IMPORTANT: Remember to set the `Scan Scope` to `All sources` since we apply checkstyle rules for production and test sources.
+IMPORTANT: Remember to set the `Scan Scope` to `All sources` since we apply checkstyle rules for production and test sources.