Initial implementation of an elasticsearch indexer in Go

Closes #1 (closed)

elastic/client_test.go

@@ -67,7 +67,7 @@ func TestElasticClientIndexAndRetrieval(t *testing.T) {
 		t.SkipNow()
 	}
-	os.Setenv("RAILS_ENV", fmt.Sprintf("test-%d", time.Now().Unix()))
+	os.Setenv("RAILS_ENV", fmt.Sprintf("test-elastic-%d", time.Now().Unix()))
 	client, err := elastic.FromEnv(projectID)
 	assert.NoError(t, err)