Add a base readme

Author: Dedac

README.md

@@ -0,0 +1,16 @@
+# Rest Data Mapping Picklist
+#### An Azure DevOps Work Item Form Extension
+
+This is an extension for Azure DevOps to load Rest data into a simple picklist.
+You can map additional data from the same rest call to other fields in the Work Item
+
+Build the dev version and run locally
+You will need to setup a local signing certificate (instructions to be added later)
+```
+npm run build-dev
+npm run serve-dev
+```
+Build and package the dev control 
+```
+npm run build
+```