chore: add delete command to README

Makefile

@@ -7,3 +7,29 @@ clean:
 
 dev:
 	go build -o ./dist/envy .
+
+
+BINARY := myapp
+VERSION := $(shell git describe --tags --always --dirty)
+OUTPUT := dist
+
+GOOSARCHES = \
+		linux/amd64 \
+		linux/arm64 \
+		darwin/amd64 \
+		darwin/arm64 \
+		windows/amd64 \
+		windows/arm64
+
+prod:
+	@echo "==> Building version $(VERSION)"
+	@mkdir -p $(OUTPUT)
+	@for platform in $(GOOSARCHES); do \
+		OS=$${platform%/*}; \
+		ARCH=$${platform#*/}; \
+		EXT=""; \
+		if [ $$OS = "windows" ]; then EXT=".exe"; fi; \
+		OUTFILE=$(OUTPUT)/$(BINARY)-$(VERSION)-$$OS-$$ARCH$$EXT; \
+		echo "   -> $$OS/$$ARCH"; \
+		GOOS=$$OS GOARCH=$$ARCH go build -ldflags="-s -w" -trimpath -o $$OUTFILE . || exit 1; \
+	done

README.md

@@ -84,3 +84,8 @@ make
 ### envy edit
 
 - Open .env file in the default editor
+
+### envy delete
+
+- Delete a particular environment, or the entire project
+- Cannot delete current environment