Added googleapis submodule. Setup protoc scripts.

.gitmodules

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+[submodule "googleapis"]
+	path = googleapis
+	url = https://github.com/googleapis/googleapis.git

Makefile

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+ADS_VERSION=v0
+PROTO_ROOT_DIR=googleapis/
+PROTO_SRC_DIR=/google/ads/googleads/$(ADS_VERSION)/**/*.proto
+PROTO_OUT_DIR=$$GOPATH/src/github.com/kritzware/google-ads-go/protos/
+PKG_PATH=paths=import
+PROTOC_GO_ARGS=--go_out=plugins=grpc,$(PKG_PATH):$(PROTO_OUT_DIR)
+
+ENTRY=main.go
+BIN=gads
+
+build:
+	go build -o $$GOPATH/bin/$(BIN) $(ENTRY)
+
+run:
+	go run $(ENTRY)
+
+run-debug:
+	GODEBUG=http2debug=2 GRPC_GO_LOG_SEVERITY_LEVEL=info GRPC_GO_LOG_VERBOSITY_LEVEL=2 go run $(ENTRY)
+
+.SILENT protos:
+	echo "converting protos for version $(ADS_VERSION)"
+	for file in $(PROTO_ROOT_DIR)$(PROTO_SRC_DIR); do \
+		echo "converting proto $$(basename $$file)"; \
+		protoc -I=$(PROTO_ROOT_DIR) $(PROTOC_GO_ARGS) $$file; \
+	done; \
+	echo "built proto files to $$(basename $(PROTO_OUT_DIR))"
+
+clean-protos:
+	rm -rf protos/*
+
+.PHONY: protos
+
+# proto:
+# 	protoc -I=$(SRC_DIR) --go_out=plugins=grpc:$(PROTO_OUT_DIR) $(SRC_DIR)$(SRC_INPUT)
+
+# .SILENT protos: clean-protos
+# 	echo "converting all protos in $(SRC_INPUT)"; \
+# 	for file in $(SRC_DIR)$(SRC_INPUT); do \
+# 		protoc -I=$(SRC_DIR) --go_out=plugins=grpc,$(PKG_PATH):$(PROTO_OUT_DIR) $$file; \
+# 	done; \

main.go

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+package main
+
+// services "github.com/kritzware/google-ads-go/protos/google/ads/googleads/v0/services"
+
+func main() {
+
+}