Updates armon/go-radix.

vendor/github.com/armon/go-radix/.gitignore

@@ -1,22 +0,0 @@
-# Compiled Object files, Static and Dynamic libs (Shared Objects)
-*.o
-*.a
-*.so
-
-# Folders
-_obj
-_test
-
-# Architecture specific extensions/prefixes
-*.[568vq]
-[568vq].out
-
-*.cgo1.go
-*.cgo2.c
-_cgo_defun.c
-_cgo_gotypes.go
-_cgo_export.*
-
-_testmain.go
-
-*.exe

vendor/github.com/armon/go-radix/.travis.yml

@@ -1,3 +0,0 @@
-language: go
-go:
-  - tip

vendor/vendor.json

@@ -33,8 +33,10 @@
 			"revisionTime": "2016-07-17T04:34:58Z"
 		},
 		{
+			"checksumSHA1": "gNO0JNpLzYOdInGeq7HqMZUzx9M=",
 			"path": "github.com/armon/go-radix",
-			"revision": "4239b77079c7b5d1243b7b4736304ce8ddb6f0f2"
+			"revision": "4239b77079c7b5d1243b7b4736304ce8ddb6f0f2",
+			"revisionTime": "2016-01-15T23:47:25Z"
 		},
 		{
 			"path": "github.com/bgentry/speakeasy",