Update address formatting (#67)

* Add getSignatures command for list of signatures in constants

* Update VatTune converter's formatting of addresses

and added an integration test

* Move VatTune and PriceFeeds integration tests to a common suite

* Update VatGrab converter for address format

* Update frob converter to fix urn and ilk formatting/decoding

* Update formatting

* Update make test command and add integrationtest command

* Add integration test to travis build

* Update creating headers in integration tests to include Raw and Timestamp fields

pkg/transformers/integration_tests/integration_tests_suite_test.go

@@ -0,0 +1,13 @@
+package integration_tests
+
+import (
+	"testing"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+func TestIntegrationTests(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "IntegrationTests Suite")
+}