updated russross/blackfriday to v1.5.1

vendor/github.com/russross/blackfriday/.travis.yml

@@ -1,18 +1,30 @@
-# Travis CI (http://travis-ci.org/) is a continuous integration service for
-# open source projects. This file configures it to run unit tests for
-# blackfriday.
-
+sudo: false
 language: go
-
 go:
-    - 1.2
-    - 1.3
-    - 1.4
-    - 1.5
-
+  - 1.5.4
+  - 1.6.2
+  - tip
+matrix:
+  include:
+    - go: 1.2.2
+      script:
+        - go get -t -v ./...
+        - go test -v -race ./...
+    - go: 1.3.3
+      script:
+        - go get -t -v ./...
+        - go test -v -race ./...
+    - go: 1.4.3
+      script:
+        - go get -t -v ./...
+        - go test -v -race ./...
+  allow_failures:
+    - go: tip
+  fast_finish: true
 install:
-    - go get -d -t -v ./...
-    - go build -v ./...
-
+  - # Do nothing. This is needed to prevent default install action "go get -t -v ./..." from happening here (we want it to happen inside script step).
 script:
-    - go test -v ./...
+  - go get -t -v ./...
+  - diff -u <(echo -n) <(gofmt -d -s .)
+  - go tool vet .
+  - go test -v -race ./...