Make golint fail if lint errors are found, and fix said lint.

2 files changed, 3 insertions, 1 deletions

diff --git a/.travis.yml b/.travis.yml
index afacec5..9e5c641 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -14,7 +14,7 @@ script:
 - go build .
 - go test .
 - go vet .
-- golint .
+- golint -set_exit_status .
 
 jobs:
   include:
diff --git a/acme.go b/acme.go
index 5ec4ca8..ab8d59a 100644
--- a/acme.go
+++ b/acme.go
@@ -26,12 +26,14 @@ type acmeCacheEntry struct {
 	expires time.Time
 }
 
+// ACME locates backends that are attempting ACME SNI-based validation.
 type ACME struct {
 	backends []string
 	// *.acme.invalid domain to cache entry
 	cache map[string]acmeCacheEntry
 }
 
+// Match returns the backend for hostname, if one is found.
 func (s *ACME) Match(hostname string) string {
 	c := s.cache[hostname]
 	if time.Now().Before(c.expires) {