mod tidy out addlicense

Add go get command required for addlicense.

README.md

@@ -458,6 +458,7 @@ Tests can be run like `go test ./... -v`
 
 Adding new files? Get the license header correct with:
 
+> go get -u github.com/google/addlicense
 > addlicense -f ./header.txt .
 
 ### Release Process

go.mod

@@ -14,7 +14,6 @@ require (
 	github.com/dustin/go-humanize v1.0.0 // indirect
 	github.com/golang/dep v0.5.4
 	github.com/golang/protobuf v1.2.0 // indirect
-	github.com/google/addlicense v0.0.0-20200301095109-7c013a14f2e2 // indirect
 	github.com/google/go-cmp v0.3.1 // indirect
 	github.com/jarcoal/httpmock v1.0.4
 	github.com/jmank88/nuts v0.3.0 // indirect

go.sum

@@ -29,8 +29,6 @@ github.com/golang/dep v0.5.4 h1:WfV5qbGwsBNUDhk+pfI6emWm7SdDFsnSWkqCMNG3BRs=
 github.com/golang/dep v0.5.4/go.mod h1:6RZ2Wai7dSWk7qL55sDYk+8UPFqcW7all2KDBraPPFA=
 github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
 github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/google/addlicense v0.0.0-20200301095109-7c013a14f2e2 h1:N/H6+jLLYNoskSbyRaph9ttbcaGEw4AWpAZw+1VqIGs=
-github.com/google/addlicense v0.0.0-20200301095109-7c013a14f2e2/go.mod h1:EMjYTRimagHs1FwlIqKyX3wAM0u3rA+McvlIIWmSamA=
 github.com/google/go-cmp v0.3.1 h1:Xye71clBPdm5HgqGwUkwhbynsUJZhDbS20FvLhQ2izg=
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/jarcoal/httpmock v1.0.4 h1:jp+dy/+nonJE4g4xbVtl9QdrUNbn6/3hDT5R4nDIZnA=
@@ -67,10 +65,6 @@ github.com/stretchr/testify v1.3.0 h1:TivCn/peBQ7UY8ooIcPgZFpTNSz0Q2U6UrFlUfqbe0
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 golang.org/x/net v0.0.0-20181220203305-927f97764cc3 h1:eH6Eip3UpmR+yM/qI9Ijluzb1bNv/cAU/n+6l8tRSis=
 golang.org/x/net v0.0.0-20181220203305-927f97764cc3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4 h1:YUO/7uOKsKeq9UokNS62b8FYywz3ker1l1vDZRCRefw=
-golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e h1:vcxGaoTs7kV8m5Np9uUNQin4BrLOthgV7252N8V+FwY=
-golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a h1:WXEvlFVvvGxCJLG6REjsT03iWnKLEWinaScsxF2Vm2o=
 golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=