tests(ci): add coverage reporting to tests and upload to coveralls.io

Author: mboersma

.gitignore

@@ -20,3 +20,6 @@ _cgo_export.*
 _testmain.go
 
 *.exe
+
+# coverage droppings
+profile.cov

.travis.yml

@@ -5,16 +5,25 @@
 language: go
 
 go:
-    - 1.1.2
-    - 1.2.1
+    - 1.2.2
     - tip
 
+matrix:
+    fast_finish: true
+
 before_install:
+    - go get code.google.com/p/go.tools/cmd/vet
     - go get -v github.com/golang/lint/golint
+    - go get -v code.google.com/p/go.tools/cmd/cover
+    - go get -v github.com/mattn/goveralls
 
 install:
     - go get -d -v ./... && go build -v .
 
 script:
+    - go vet -x ./...
     - $HOME/gopath/bin/golint .
-    - go test -v .
+    - go test -covermode=count -coverprofile=profile.cov -v .
+
+after_script:
+    - $HOME/gopath/bin/goveralls -coverprofile=profile.cov -service=travis-ci

README.md

@@ -2,6 +2,7 @@ docopt-go
 =========
 
 [![Build Status](https://travis-ci.org/docopt/docopt.go.svg?branch=master)](https://travis-ci.org/docopt/docopt.go)
+[![Coverage Status](https://coveralls.io/repos/docopt/docopt.go/badge.png)](https://coveralls.io/r/docopt/docopt.go)
 [![GoDoc](https://godoc.org/github.com/docopt/docopt.go?status.png)](https://godoc.org/github.com/docopt/docopt.go)
 
 An implementation of [docopt](http://docopt.org/) in the