Run travis tests using govendor (#91)

* Build and test using vendored dependencies
* Fix TestDialTLSTimeout test
* Remove go get ./...
* Add kingpin

.travis.yml

@@ -4,23 +4,23 @@ go:
   - 1.6.x
   - 1.7.x
   - 1.8.x
+  - 1.9.x
   - tip
 
 before_install:
-  - go get ./...
+  - go get gopkg.in/alecthomas/kingpin.v2
   - go get github.com/axw/gocov/gocov
   - go get github.com/mattn/goveralls
   - go get github.com/stretchr/testify/assert
+  - go get github.com/kardianos/govendor
   - if ! go get github.com/golang/tools/cmd/cover; then go get golang.org/x/tools/cmd/cover; fi
 
 install:
-  - go get golang.org/x/net/http2
-  - go get golang.org/x/net/context
-  - go get golang.org/x/crypto/pkcs12
+  - $HOME/gopath/bin/govendor sync
 
 os:
   - linux
 
 script:
-  - go test -race -v ./...
+  - $HOME/gopath/bin/govendor test -race -v +local
   - $HOME/gopath/bin/goveralls -service=travis-ci

client_test.go

@@ -81,7 +81,7 @@ func TestClientNameToCertificate(t *testing.T) {
 }
 
 func TestDialTLSTimeout(t *testing.T) {
-	apns.TLSDialTimeout = 1 * time.Millisecond
+	apns.TLSDialTimeout = 10 * time.Millisecond
 	crt, _ := certificate.FromP12File("certificate/_fixtures/certificate-valid.p12", "")
 	client := apns.NewClient(crt)
 	dialTLS := client.HTTPClient.Transport.(*http2.Transport).DialTLS