Update documentation with supported runtimes

README.md

@@ -10,11 +10,22 @@ Serverless Middleware
 
 Serverless plugin to allow middleware handlers configured directly in serverless.yaml
 
-**Requirements:**
+## Requirements:
 * Serverless
 * AWS provider
 * Node.js 8.10+
 
+### Supported runtimes
+
+- [x] nodejs8.10 (both Javascript and Typescript)
+- [ ] dotnetcore2.1
+- [ ] java8
+- [ ] go1.x
+- [ ] python2.7
+- [ ] python3.7
+- [ ] ruby2.5
+- [ ] provided 
+
 ## Installation
 
 Install via npm in the root of your Serverless service:
@@ -129,7 +140,6 @@ functions:
 
 will result in a similar promise chain as above.
 
-
 ## Packaging
 
 In most cases you shouldn't need to change the default packaging configuration.