Travis: Check for gofmt issues. (#241)

* Travis: Check for gofmt issues.

This will help catch issues like https://github.com/shazow/ssh-chat/pull/240#discussion_r127626103
in CI.

* chat: Fix gofmt issue.

.travis.yml

@@ -15,6 +15,7 @@ install:
   - go get github.com/gordonklaus/ineffassign
 
 script:
+  - diff -u <(echo -n) <(gofmt -d .)
   - ineffassign .
   - go vet $(go list ./... | grep -v /vendor/)
   - go test -v $(go list ./... | grep -v /vendor/)

chat/sanitize.go

@@ -3,6 +3,7 @@ package chat
 import "regexp"
 
 var reStripName = regexp.MustCompile("[^\\w.-]")
+
 const maxLength = 16
 
 // SanitizeName returns a name with only allowed characters and a reasonable length