feat: add oclif badge
MODIFY
templates/README.md.ejs
templates/README.md.ejs
<%= pjson.description %>
+[![oclif](https://img.shields.io/badge/cli-oclif-brightgreen.svg)](https://oclif.io)
[![Version](https://img.shields.io/npm/v/<%= pjson.name %>.svg)](https://npmjs.org/package/<%= pjson.name %>)
[![CircleCI](https://circleci.com/gh/<%= repository %>/tree/master.svg?style=shield)](https://circleci.com/gh/<%= repository %>/tree/master)
[![Appveyor CI](https://ci.appveyor.com/api/projects/status/github/<%= repository %>?branch=master&svg=true)](https://ci.appveyor.com/project/<%= repository %>/branch/master)

feat: add oclif badge