Release v3.2.1

This release fixes a bug where UPSTREAM_URL was not substituted in the
yum config, updates the Makefile providing better options, introduces a
travis config for the repo, creates a separate ister statedir for
build-image to not conflict with the system's main statedir, and updates
the package structure to follow regular Go conventions.

Signed-off-by: Tudor Marcu <tudor.marcu@intel.com>

mixer/main.go

@@ -13,7 +13,7 @@ import (
 	"github.com/clearlinux/mixer-tools/helpers"
 )
 
-const Version = "3.2.0"
+const Version = "3.2.1"
 
 type Command struct {
 	Name        string