update readme with testing steps

Makefile

@@ -5,3 +5,6 @@ build: decl
 
 decl:
 	go build -o decl $(LDFLAGS) ./cmd/cli/main.go
+
+test:
+	go test ./...

README.md

@@ -4,6 +4,21 @@
 
 These tools work with YAML descriptions of resources (E.g. files, users, containers, etc) for (de)serializing the state of the given resource.  This enables more generically describing the state of a supported resource type, pipeling state transformations and enabling the use of other tools in that process.
 
+# Dependencies
+
+* Go >= 1.21.1
+
+# Testing
+
+Testing the current version involves checking out main and building.
+
+`git clone https://gitea.rosskeen.house/Declarative/decl.git
+
+make test
+
+make build
+`
+
 # Command-line
 
 # Update Resource state