feat(coveralls): coveralls and go-report-card status. (#53)

Author: yasirfolio3

.travis.yml

@@ -2,10 +2,12 @@ language: go
 go:
   - 1.12.x
   - master
+before_install:
+  - go get github.com/mattn/goveralls
 git:
   depth: 1
 script:
-  - go test -v -race ./...
+  - $GOPATH/bin/goveralls -service=travis-ci
 stages:
   - 'Integration tests'
   - 'Test'

README.md

@@ -1,5 +1,8 @@
 # Optimizely Go SDK
 
+[![Go Report Card](https://goreportcard.com/badge/github.com/optimizely/go-sdk)](https://goreportcard.com/report/github.com/optimizely/go-sdk)
+[![Coverage Status](https://coveralls.io/repos/github/optimizely/go-sdk/badge.svg?branch=go-alpha)](https://coveralls.io/github/optimizely/go-sdk?branch=go-alpha)
+
 ## Usage
 
 ### Instantiation