Add license

Author: patrick-ogrady

go.sum

@@ -257,6 +257,7 @@ github.com/golang/snappy v0.0.2-0.20200707131729-196ae77b8a26 h1:lMm2hD9Fy0ynom5
 github.com/golang/snappy v0.0.2-0.20200707131729-196ae77b8a26/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/google/addlicense v0.0.0-20200817051935-6f4cd4aacc89 h1:oTppmscIAQ2Y1tcsMDcTLR3z4MN/96/pvIsBSLGl7o8=
 github.com/google/addlicense v0.0.0-20200817051935-6f4cd4aacc89/go.mod h1:EMjYTRimagHs1FwlIqKyX3wAM0u3rA+McvlIIWmSamA=
+github.com/google/addlicense v0.0.0-20200827091314-d1655b921368 h1:Ds6gDZHoviaQM7r7oMx/cG2qwZc3l5u7cg6gTkxOZNE=
 github.com/google/addlicense v0.0.0-20200827091314-d1655b921368/go.mod h1:EMjYTRimagHs1FwlIqKyX3wAM0u3rA+McvlIIWmSamA=
 github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=

pkg/tester/general.go

@@ -1,3 +1,17 @@
+// Copyright 2020 Coinbase, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package tester
 
 import (