lint step for copyright headers (#16)

* overlay proto

* grpc server and client

* fix import to storj

* tests

* change imports

* imports cleanup/comments

* PR comments addressed from @jtolds

* lint step for copyright headers

* spelling

* PR comments addressed from @jtolds

Makefile

@@ -1,5 +1,5 @@
-lint:
-	@echo "gometalinter"
+lint: check-copyrights
+	@echo "Running ${@}"
 	@gometalinter.v2 \
 	--deadline=60s \
 	--disable-all \
@@ -11,12 +11,17 @@ lint:
 	--exclude=.*\.pb\.go \
 	./...
 
+check-copyrights:
+	@echo "Running ${@}"
+	@./scripts/check-for-header.sh
+
 
 proto:
 	@echo "Running ${@}"
 	./scripts/build-protos.sh
 
+
 build-dev-deps:
 	go get -u github.com/golang/protobuf/protoc-gen-go
 	go get -u gopkg.in/alecthomas/gometalinter.v2
-	gometalinter.v2 --install
+	gometalinter.v2 --install

scripts/check-for-header.sh

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+FILES=$(find $PWD -type f \( -iname '*.go' ! -iname "*.pb.go" \) )
+for i in $FILES
+do
+  if ! grep -q 'Copyright' <<< "$(head -n 2 "$i")" 
+  then
+    echo " missing copyright header for $i"
+  fi
+done