Use conventional Go style for exported variables (#45)

Author: bwhaley

README.md

@@ -55,9 +55,9 @@ func main() {
       app.Name = "my-app"
       app.Author = "Gruntwork <www.gruntwork.io>"
 
-      // Set the version number from your app from the VERSION variable that is passed in at build time in `version` package
+      // Set the version number from your app from the Version variable that is passed in at build time in `version` package
       // for more understanding see github.com/gruntwork-io/go-commons/version
-      app.Version = version.Version()
+      app.Version = version.GetVersion()
 
       app.Action = func(cliContext *cli.Context) error {
         // ( fill in your app details)

version/version.go

@@ -3,16 +3,16 @@ package version
 // This variable is set at build time using -ldflags parameters. For example, we typically set this flag in circle.yml
 // to the latest Git tag when building our Go apps:
 //
-// build-go-binaries --app-name my-app --dest-path bin --ld-flags "-X github.com/gruntwork-io/go-commons/version.VERSION=$CIRCLE_TAG"
-// go build -o my-app -ldflags "-X github.com/gruntwork-io/go-commons/version.VERSION=v1.0.0"
+// build-go-binaries --app-name my-app --dest-path bin --ld-flags "-X github.com/gruntwork-io/go-commons/version.Version=$CIRCLE_TAG"
+// go build -o my-app -ldflags "-X github.com/gruntwork-io/go-commons/version.Version=v1.0.0"
 //
 // For more info, see: http://stackoverflow.com/a/11355611/483528
 
 var (
-	VERSION = "latest"
+	Version = "latest"
 )
 
 // Version composes a version of the package
-func Version() string {
-	return VERSION
+func GetVersion() string {
+	return Version
 }