Golint (#404)

* golint
* remove gitter badge

server/token_test.go

@@ -4,12 +4,12 @@ import "testing"
 
 func BenchmarkTokenConcat(b *testing.B) {
 	for i := 0; i < b.N; i++ {
-		_ = Token(5) + Token(5)
+		_ = token(5) + token(5)
 	}
 }
 
 func BenchmarkTokenLonger(b *testing.B) {
 	for i := 0; i < b.N; i++ {
-		_ = Token(10)
+		_ = token(10)
 	}
 }