add test script for testing

Signed-off-by: Corbin Halliwill <challiwill@pivotal.io>

scripts/ci

@@ -0,0 +1,18 @@
+#!/bin/bash
+# vim: set ft=sh
+
+set -eu
+
+export GOPATH=$PWD/gopath
+export PATH=$GOPATH/bin:$PATH
+
+cd $GOPATH/src/github.com/concourse/github-release-resource
+
+export GOPATH=${PWD}/Godeps/_workspace:$GOPATH
+export PATH=${PWD}/Godeps/_workspace/bin:$PATH
+
+go install github.com/onsi/ginkgo/ginkgo
+
+CGO_ENABLED=1 ginkgo -race -r -p "$@"
+
+./scripts/build