Updated the Makefile to improve the resulting zip file name

Makefile

@@ -1,4 +1,10 @@
 
+VERSION := $(shell git describe --tags)
+VERSION_COMMIT := $(shell git describe --always --long)
+ifeq ($(VERSION),)
+VERSION:=$(VERSION_COMMIT)
+endif
+
 default: build
 
 init:
@@ -12,20 +18,19 @@ install: build
 	cp ./bin/docker-machine-driver-cloudca $(GOPATH)/bin/
 
 build-all: clean
-	# compile for all OS/Arch using Gox
+	echo $(VERSION)
 	gox -verbose \
-		-ldflags "-X main.version=${VERSION}" \
+		-ldflags "-X main.version=$(VERSION)" \
 		-os="linux darwin windows" \
 		-arch="386 amd64 arm" \
 		-osarch="!darwin/arm !darwin/386" \
 		-output="dist/{{.OS}}-{{.Arch}}/docker-machine-driver-cloudca" ./bin
 
-	# zip the executables
-	for PLATFORM in `find ./dist -mindepth 1 -maxdepth 1 -type d` ; do \
+	@for PLATFORM in `find ./dist -mindepth 1 -maxdepth 1 -type d` ; do \
 		OSARCH=`basename $$PLATFORM` ; \
 		echo "--> $$OSARCH" ; \
 		pushd $$PLATFORM >/dev/null 2>&1 ; \
-		zip ../$$OSARCH.zip ./* ; \
+		zip ../docker-machine-driver-cloudca_$(VERSION)_$$OSARCH.zip ./* ; \
 		popd >/dev/null 2>&1 ; \
 	done