Introduce TravisCI, Coveralls, Linters and fix found problems

.travis.yml

@@ -0,0 +1,22 @@
+language: go
+
+go:
+  - 1.7.1
+
+sudo: false
+
+env:
+  global:
+    # Coveralls.io
+    - secure: OGYOsFNXNarEZ5yA4/M6ZdVguD0jL8vXgXrbLzjcpkKcq8ObHSCtNINoUlnNf6l6Z92kPnuV+LSm7jKTojBlov4IwgiY1ACbvg921SdjxYkg1AiwHTRTLR1g/esX8RdaBpJ0TOcXOFFsYMRVvl5sxxtb0tXSuUrT+Ch4SUCY7X8=
+
+install:
+  - make install-dependencies
+  - make install-tools
+  - make install
+
+script:
+  - make lint
+  - make test-with-coverage
+  - gover
+  - if [ "$TRAVIS_SECURE_ENV_VARS" = "true" ]; then goveralls -coverprofile=gover.coverprofile -service=travis-ci -repotoken $COVERALLS_TOKEN; fi

Makefile

@@ -0,0 +1,44 @@
+.PHONY: all clean clean-coverage install install-dependencies install-tools lint test test-verbose test-with-coverage
+
+export ARGS := $(wordlist 2,$(words $(MAKECMDGOALS)),$(MAKECMDGOALS))
+export PKG := github.com/sergi/go-diff
+export ROOT_DIR := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
+
+$(eval $(ARGS):;@:) # turn arguments into do-nothing targets
+export ARGS
+
+ifdef ARGS
+	PKG_TEST := $(ARGS)
+else
+	PKG_TEST := $(PKG)/...
+endif
+
+all: install-tools install-dependencies install lint test
+
+clean:
+	go clean -i $(PKG)/...
+	go clean -i -race $(PKG)/...
+clean-coverage:
+	find $(ROOT_DIR) | grep .coverprofile | xargs rm
+install:
+	go install -v $(PKG)/...
+install-dependencies:
+	go get -t -v $(PKG)/...
+	go build -v $(PKG)/...
+install-tools:
+	# Install linting tools
+	go get -u -v github.com/golang/lint/...
+	go get -u -v github.com/kisielk/errcheck/...
+
+	# Install code coverage tools
+	go get -u -v github.com/onsi/ginkgo/ginkgo/...
+	go get -u -v github.com/modocache/gover/...
+	go get -u -v github.com/mattn/goveralls/...
+lint:
+	$(ROOT_DIR)/scripts/lint.sh
+test:
+	go test -race -test.timeout 120s $(PKG_TEST)
+test-verbose:
+	go test -race -test.timeout 120s -v $(PKG_TEST)
+test-with-coverage:
+	ginkgo -r -cover -race -skipPackage="testdata"

README.md

@@ -1,12 +1,10 @@
-go-diff
-=======
+# go-diff [![GoDoc](https://godoc.org/github.com/sergi/go-diff?status.png)](https://godoc.org/github.com/sergi/go-diff) [![Build Status](https://travis-ci.org/sergi/go-diff.svg?branch=master)](https://travis-ci.org/sergi/go-diff) [![Coverage Status](https://coveralls.io/repos/sergi/go-diff/badge.png?branch=master)](https://coveralls.io/r/sergi/go-diff?branch=master)
 
 Go-diff is a Go language port of Neil Fraser's google-diff-match-patch code. His original code is available at:
 
 http://code.google.com/p/google-diff-match-patch/
 
-Current state for this Go library
----------------------------------
+## Current state for this Go library
 
 In order to run the tests:
 
@@ -16,8 +14,7 @@ In order to run the tests:
 
     go get github.com/sergi/go-diff/diffmatchpatch
 
-Copyright and License
----------------------
+## Copyright and License
 
 The original Google Diff, Match and Patch Library is licensed under
 the [Apache License 2.0](http://www.apache.org/licenses/LICENSE-2.0).