addressing review comments; still need to reorg migrations and add helper tests

pkg/plugin/helpers/helpers.go

@@ -1,3 +1,19 @@
+// VulcanizeDB
+// Copyright © 2018 Vulcanize
+
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 package helpers
 
 import (
@@ -32,7 +48,7 @@ func ClearFiles(files ...string) error {
 				return err
 			}
 		} else if os.IsNotExist(err) {
-			// fall through
+			continue
 		} else {
 			return err
 		}