enable Travis CI, closes #17 (#18)

* enable Travis CI

* go_import_path

* travis: ./bin/kelp version

.travis.yml

@@ -0,0 +1,17 @@
+language: go
+
+go_import_path: github.com/lightyeario/kelp
+
+go:
+- "1.10.x"
+- "1.11"
+
+before_install:
+- curl https://glide.sh/get | sh
+
+install:
+- glide install
+
+script:
+- ./scripts/build.sh
+- ./bin/kelp version

README.md

@@ -4,6 +4,7 @@
 [![Github All Releases](https://img.shields.io/github/downloads/lightyeario/kelp/total.svg?style=for-the-badge)][github-releases]
 [![license](https://img.shields.io/badge/License-Apache%202.0-blue.svg?style=for-the-badge&longCache=true)][license-apache]
 
+[![Build Status](https://travis-ci.com/lightyeario/kelp.svg?branch=master)](https://travis-ci.com/lightyeario/kelp)
 [![GitHub issues](https://img.shields.io/github/issues/lightyeario/kelp.svg?style=flat-square&longCache=true)][github-issues]
 [![GitHub closed issues](https://img.shields.io/github/issues-closed/lightyeario/kelp.svg?style=flat-square&longCache=true)][github-issues-closed]
 [![GitHub pull requests](https://img.shields.io/github/issues-pr/lightyeario/kelp.svg?style=flat-square&longCache=true)][github-pulls]