Add Makefile

This patch also adds Makefile.target.sample with exemplary user
configuration and .gitignore to dismiss temporary artifacts.

.gitignore

@@ -0,0 +1,6 @@
+# Target specific configuration and binary
+Makefile.target
+relayctl.target
+
+# Test coverage analysis artifact
+relayctl.coverprofile

Makefile

@@ -0,0 +1,23 @@
+BINARY_NAME=relayctl
+BINARY_TARGET=$(BINARY_NAME).target
+
+include Makefile.target
+
+all: test build deploy run
+
+test:
+	ginkgo
+
+cover:
+	ginkgo -cover
+
+build:
+	GOARCH=$(GOARCH) GOARM=$(GOARM) GOOS=$(GOOS) go build -o $(BINARY_TARGET)
+
+deploy:
+	scp $(BINARY_TARGET) $(USER)@$(HOST):$(DEST)
+
+run:
+	-ssh -t $(USER)@$(HOST) $(DEST)/$(BINARY_TARGET)
+
+.PHONY: all test cover build deploy run

Makefile.target.sample

@@ -0,0 +1,7 @@
+GOARCH=arm
+GOARM=6
+GOOS=linux
+
+USER=pi
+HOST=10.42.0.224
+DEST=relayctl