Added versions

Makefile

@@ -1,6 +1,8 @@
-.PHONY: all clean dist
+.PHONY: all clean dist version
 
-all: deps crosscompile dist
+VERSION := $(shell if [ -z "$$TRAVIS_TAG" ]; then echo "dev"; else echo "$$TRAVIS_TAG" | tail -c +2; fi)
+
+all: deps crosscompile version dist
 
 deps:
 	go get github.com/mitchellh/gox
@@ -10,10 +12,10 @@ build:
 	go build grvm.go
 
 crosscompile:
-	gox --osarch="linux/amd64" --output="crosscompile/linux_amd64_grvm"
-	gox --osarch="linux/386" --output="crosscompile/linux_386_grvm"
-	gox --osarch="linux/arm" --output="crosscompile/linux_arm_grvm"
-	gox --osarch="darwin/amd64" --output="crosscompile/darwin_amd64_grvm"
+	gox --osarch="linux/amd64" --output="crosscompile/linux_amd64_grvm" --ldflags='-X main.version=${VERSION}'
+	gox --osarch="linux/386" --output="crosscompile/linux_386_grvm" --ldflags='-X main.version=${VERSION}'
+	gox --osarch="linux/arm" --output="crosscompile/linux_arm_grvm" --ldflags='-X main.version=${VERSION}'
+	gox --osarch="darwin/amd64" --output="crosscompile/darwin_amd64_grvm" --ldflags='-X main.version=${VERSION}'
 
 dist:
 	@for target in crosscompile/*_grvm; do \

grvm.go

@@ -15,6 +15,8 @@ const (
 	rubyBuildRepo = "https://github.com/rbenv/ruby-build.git"
 )
 
+var version = ""
+
 var currentHome = os.Getenv("HOME")
 var grvmRuby = os.Getenv("grvm_ruby")
 var grvmDirectory = fmt.Sprintf("%s/.grvm", currentHome)
@@ -39,6 +41,7 @@ func main() {
 	app := cli.NewApp()
 	app.Name = "GRVM"
 	app.Usage = "GRVM"
+	app.Version = version
 	app.Flags = []cli.Flag{
 		cli.BoolFlag{
 			Name: "shell, s",

install.sh

@@ -46,7 +46,7 @@ function tmpCleanup {
 
 case $1 in
 	"devinstall")
-		go build grvm.go
+		go build --ldflags '-X main.version=dev' grvm.go
 		rm -rf $HOME/.grvm/bin
 		rm -rf $HOME/.grvm/scripts
 		mkdir -p $HOME/.grvm/bin