Add code coverage reporting to codecov and corresponding badge (centrifuge#14)

Author: philipstanislaus

Diff for: .travis.yml

@@ -25,3 +25,6 @@ install:
 script:
   - make lint
   - make test-dockerized
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)

Diff for: Dockerfile

@@ -58,4 +58,4 @@ COPY . .
 
 RUN make install
 
-CMD ["make", "test"]
+CMD ["make", "test-cover"]

Diff for: Makefile

@@ -36,7 +36,8 @@ test: ## runs all tests in project
 	@go test -v ./...
 
 test-cover: ## runs all tests in project and report coverage
-	@go test -cover -count=1 ./...
+	@go test -v -race -coverprofile=coverage.txt -covermode=atomic ./...
+	@mv coverage.txt shared
 
 test-dockerized: ## runs the tests in a docker container against the Substrate Default Docker image
 	@docker-compose build

Diff for: README.md

@@ -3,6 +3,7 @@
 [![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0)
 [![GoDoc Reference](https://godoc.org/github.com/centrifuge/go-substrate-rpc-client?status.svg)](https://godoc.org/github.com/centrifuge/go-substrate-rpc-client)
 [![Build Status](https://travis-ci.com/centrifuge/go-substrate-rpc-client.svg?branch=master)](https://travis-ci.com/centrifuge/go-substrate-rpc-client)
+[![codecov](https://codecov.io/gh/centrifuge/go-substrate-rpc-client/branch/master/graph/badge.svg)](https://codecov.io/gh/centrifuge/go-substrate-rpc-client)
 [![Go Report Card](https://goreportcard.com/badge/github.com/centrifuge/go-substrate-rpc-client)](https://goreportcard.com/report/github.com/centrifuge/go-substrate-rpc-client)
 
 Substrate RPC client in Go. It provides APIs and types around Polkadot and any Substrate-based chain RPC calls.

Diff for: docker-compose.yml

@@ -11,18 +11,18 @@ services:
       - 9944
       - 30333
     networks:
-      centchain-network:
+      gsrpc-network:
         ipv4_address: 172.42.0.2
     command: --dev --ws-external --rpc-external
   rpc-client-tests:
     build: .
     networks:
-      centchain-network:
+      gsrpc-network:
         ipv4_address: 172.42.0.99
     environment:
       - RPC_URL=http://172.42.0.2:9933
 networks:
-  centchain-network:
+  gsrpc-network:
     ipam:
       driver: default
       config:

Diff for: shared/.gitignore

@@ -0,0 +1 @@
+coverage.txt