Add support for travis, coveralls and appveyor

This commit also adds further tests.

service_nosu_test.go

@@ -0,0 +1,13 @@
+// Copyright 2016 Lawrence Woodman <lwoodman@vlifesystems.com>
+// Use of this source code is governed by a zlib-style
+// license that can be found in the LICENSE file.
+
+// +build !su
+
+package service_test
+
+import "testing"
+
+func TestInstallRunRestartStopRemove(t *testing.T) {
+	t.Skip("skipping test as not running as root/admin (Build tag: su)")
+}