feat(Makefile): add glide up command to makefile

Author: Aaron Schlesinger

Makefile

@@ -34,6 +34,9 @@ all:
 bootstrap:
 	${DEV_ENV_CMD} glide install
 
+glideup:
+	${DEV_ENV_CMD} glide up
+
 # This illustrates a two-stage Docker build. docker-compile runs inside of
 # the Docker environment. Other alternatives are cross-compiling, doing
 # the build as a `docker build`.