ci(releasing): set up semantic release for library publishing

Author: Harrison Ifeanyichukwu

README.md

@@ -2,6 +2,7 @@
 
 [![Build Status](https://travis-ci.org/harrison-ifeanyichukwu/xml-serializer.svg?branch=master)](https://travis-ci.org/harrison-ifeanyichukwu/xml-serializer)
 [![Coverage Status](https://coveralls.io/repos/github/harrison-ifeanyichukwu/xml-serializer/badge.svg?branch=master)](https://coveralls.io/github/harrison-ifeanyichukwu/xml-serializer?branch=master)
+[![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release)
 
 XML-Serializer is A JavaScript implementation of w3c [xml serialization](https://www.w3.org/TR/DOM-Parsing/#dfn-concept-serialize-xml) spec. All specifications have been implemented and includes the following [specs](https://www.w3.org/TR/DOM-Parsing/#dfn-concept-xml-serialization-algorithm):
 

package.json

@@ -11,7 +11,7 @@
     "prebuild": "rimraf dist",
     "build": "BABEL_ENV=build rollup --config",
     "travis-deploy-once": "travis-deploy-once",
-    "semantic-release": "semantic-release",
+    "semantic-release": "semantic-release pre && npm publish && semantic-release post",
     "validate-doc": "documentation lint src/**/*.js",
     "generate-doc": "rimraf docs/docs && documentation build src/**/*.js -f html -o docs/docs"
   },