add config for gometalinter

gometalinter is https://github.com/alecthomas/gometalinter

.gometalinter.json

@@ -0,0 +1,32 @@
+{
+	"vendor": true,
+	"tests": true,
+	"deadline": "10m",
+	"sort": ["path", "line"],
+	"minconstlength": 7,
+	"skip": [
+		"pkg/kd"
+	],
+	"enable": [
+		"golint",
+		"structcheck",
+		"megacheck",
+		"unconvert",
+		"deadcode",
+		"goconst",
+		"unused",
+		"gosimple",
+		"varcheck",
+		"vet"
+	],
+	"exclude": [
+		"don't use underscores in Go names",
+		"don't use ALL_CAPS in Go names",
+		"exported .* should have comment",
+		"comment on exported type",
+		"package comment should be of the form",
+		"comment on .* should be of the form",
+		"should not use dot imports",
+		"composite literal uses unkeyed fields"
+	]
+}