Making changes to versioning

Makefile

@@ -4,6 +4,7 @@ GOPATH ?= $(GOPATH:)
 GOFLAGS ?= $(GOFLAGS:)
 BUILD_NUMBER ?= $(BUILD_NUMBER:)
 BUILD_DATE = $(shell date -u)
+BUILD_HASH = $(shell git rev-parse HEAD)
 
 GO=$(GOPATH)/bin/godep go
 ESLINT=node_modules/eslint/bin/eslint.js
@@ -52,6 +53,7 @@ travis:
 
 	@sed -i'.bak' 's|_BUILD_NUMBER_|$(BUILD_NUMBER)|g' ./model/version.go
 	@sed -i'.bak' 's|_BUILD_DATE_|$(BUILD_DATE)|g' ./model/version.go
+	@sed -i'.bak' 's|_BUILD_HASH_|$(BUILD_HASH)|g' ./model/version.go
 
 	@$(GO) build $(GOFLAGS) ./...
 	@$(GO) install $(GOFLAGS) ./...
@@ -228,6 +230,7 @@ dist: install
 
 	@sed -i'.bak' 's|_BUILD_NUMBER_|$(BUILD_NUMBER)|g' ./model/version.go
 	@sed -i'.bak' 's|_BUILD_DATE_|$(BUILD_DATE)|g' ./model/version.go
+	@sed -i'.bak' 's|_BUILD_HASH_|$(BUILD_HASH)|g' ./model/version.go
 
 	@$(GO) build $(GOFLAGS) -i ./...
 	@$(GO) install $(GOFLAGS) ./...