Fix Makefile to exclude status_html.go from devel builds

Makefile

@@ -2,5 +2,7 @@
 all: status.html.go
 
 status.html.go: status.html
-	go-bindata  -i status.html -o status.html.go -p main -f status_html
-
+	go-bindata  -i status.html -o status.html.go.tmp -p main -f status_html
+	@echo "// +build !devel\n" > status.html.go
+	@cat status.html.go.tmp >> status.html.go
+	@rm status.html.go.tmp

status.html.go

@@ -1,3 +1,5 @@
+// +build !devel
+
 package main
 
 import (