Change layout for project to be more idiomatic

https://github.com/golang-standards/project-layout

Author: Peter Kelly

.gitignore

@@ -1,3 +1,2 @@
-/build
+/build_output
 .DS_Store
-

Makefile

@@ -1,4 +1,4 @@
-GO_DOCKER_RUN = docker run --rm -v $(shell pwd):/go/src/github.com/nginxinc/nginx-asg-sync -w /go/src/github.com/nginxinc/nginx-asg-sync/cmd/sync
+GO_DOCKER_RUN = docker run --rm -v $(shell pwd):/go/src/github.com/nginxinc/nginx-asg-sync -v $(shell pwd)/build_output:/build_output -w /go/src/github.com/nginxinc/nginx-asg-sync/cmd/sync
 GOLANG_CONTAINER = golang:1.10
 
 all: amazon centos7 ubuntu-trusty ubuntu-xenial
@@ -7,25 +7,25 @@ test:
 	$(GO_DOCKER_RUN) $(GOLANG_CONTAINER) go test
 
 compile: test
-	$(GO_DOCKER_RUN) $(GOLANG_CONTAINER) go build -o /build/nginx-asg-sync
+	$(GO_DOCKER_RUN) $(GOLANG_CONTAINER) go build -o /build_output/nginx-asg-sync
 
 amazon: compile
-	make -C os-packages/builders/amazon/
-	docker run --rm -v $(shell pwd)/os-packages/rpm:/rpm -v $(shell pwd)/build:/build amazon-builder
+	make -C build/package/builders/amazon/
+	docker run --rm -v $(shell pwd)/build/package/rpm:/rpm -v $(shell pwd)/build_output:/build_output amazon-builder
 
 centos7: compile
-	make -C os-packages/builders/centos7/
-	docker run --rm -v $(shell pwd)/os-packages/rpm:/rpm -v $(shell pwd)/build:/build centos7-builder
+	make -C build/package/builders/centos7/
+	docker run --rm -v $(shell pwd)/build/package/rpm:/rpm -v $(shell pwd)/build_output:/build_output centos7-builder
 
 ubuntu-xenial: compile
-	make -C os-packages/builders/ubuntu-xenial/
-	docker run --rm -v $(shell pwd)/os-packages/debian:/debian -v $(shell pwd)/build:/build ubuntu-xenial-builder
+	make -C build/package/builders/ubuntu-xenial/
+	docker run --rm -v $(shell pwd)/build/package/debian:/debian -v $(shell pwd)/build_output:/build_output ubuntu-xenial-builder
 
 ubuntu-trusty: compile
-	make -C os-packages/builders/ubuntu-trusty/
-	docker run --rm -v $(shell pwd)/os-packages/debian:/debian -v $(shell pwd)/build:/build ubuntu-trusty-builder
+	make -C build/package/builders/ubuntu-trusty/
+	docker run --rm -v $(shell pwd)/build/package/debian:/debian -v $(shell pwd)/build_output:/build_output ubuntu-trusty-builder
 
 clean:
-	-rm -r build
+	-rm -r build_output
 
 .PHONY: test

README.md

@@ -1,9 +1,11 @@
+[![Go Report Card](https://goreportcard.com/badge/github.com/nginxinc/nginx-asg-sync)](https://goreportcard.com/report/github.com/nginxinc/nginx-asg-sync)
+
 # NGINX Plus Integration with AWS Auto Scaling groups -- nginx-asg-sync
 
 **nginx-asg-sync** allows [NGINX Plus](https://www.nginx.com/products/) to discover instances of [AWS Auto Scaling groups](http://docs.aws.amazon.com/autoscaling/latest/userguide/WhatIsAutoScaling.html). When the number of instances in an Auto Scaling group changes, nginx-asg-sync adds the new instances to the NGINX Plus configuration and removes the terminated ones.
 
 ## How It Works
-nginx-asg-sync must be installed on the same EC2 instance with NGINX Plus. nginx-asg-sync constantly monitors backend Auto Scaling groups via the AWS Auto Scaling API.
+nginx-asg-sync is an agent process that runs on the same EC2 instance as NGINX Plus. It polls for changes to the backend Auto Scaling groups via the AWS Auto Scaling API.
 When it sees that a scaling event has happened, it adds or removes the corresponding backend instances from the NGINX Plus configuration via the NGINX Plus API.
 
 **Note:** nginx-asg-sync does not scale Auto Scaling groups, it only gets the IP addresses of the instances of Auto Scaling groups.
@@ -114,7 +116,7 @@ server {
 
 ### nginx-asg-sync Configuration
 
-nginx-asg-sync is configured in the file **aws.yaml** in the **/etc/nginx** folder. For our example, we define the following configuration:
+nginx-asg-sync is configured in **/etc/nginx/aws.yaml**. For our example, we define the following configuration:
 
 ```yaml
 region: us-west-2

os-packages/builders/amazon/Dockerfile renamed to build/package/builders/amazon/Dockerfile

@@ -3,4 +3,4 @@
 mkdir -p ~/rpmbuild
 cp -r rpm/* ~/rpmbuild/
 rpmbuild -bb ~/rpmbuild/SPECS/nginx-asg-sync.spec
-cp ~/rpmbuild/RPMS/x86_64/*.rpm /build
+cp ~/rpmbuild/RPMS/x86_64/*.rpm /build_output

os-packages/builders/amazon/Makefile renamed to build/package/builders/amazon/Makefile

@@ -3,4 +3,4 @@
 mkdir -p ~/rpmbuild
 cp -r rpm/* ~/rpmbuild/
 rpmbuild -bb ~/rpmbuild/SPECS/nginx-asg-sync.spec
-cp ~/rpmbuild/RPMS/x86_64/*.rpm /build
+cp ~/rpmbuild/RPMS/x86_64/*.rpm /build_output