Update makefile (#15)

* Just making a change to run a build

Signed-off-by: Gus Parvin <gparvin@redhat.com>

* use edge as the build tag

Signed-off-by: Gus Parvin <gparvin@redhat.com>

Makefile

@@ -22,7 +22,7 @@ TRAVIS_BUILD ?= 1
 # Use your own docker registry and image name for dev/test by overridding the IMG and REGISTRY environment variable.
 IMG ?= $(shell cat COMPONENT_NAME 2> /dev/null)
 REGISTRY ?= quay.io/open-cluster-management
-TAG ?= latest
+TAG ?= edge
 
 # Github host to use for checking the source tree;
 # Override this variable ue with your own value if you're working on forked repo.