add code coverage thing

.gitignore

@@ -89,4 +89,9 @@ typings/
 # DynamoDB Local files
 .dynamodb/
 
-.idea
+.idea
+
+# Ignore Typescript Generated Files:
+*.d.ts
+*.js
+*.map

.npmignore

@@ -0,0 +1,104 @@
+# Created by .ignore support plugin (hsz.mobi)
+### Node template
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+
+# next.js build output
+.next
+
+# nuxt.js build output
+.nuxt
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# Really strip down the publication slug size
+.idea
+.editorconfig
+.travis.yml
+tsconfig.json
+test/
+
+# Ignore Typescript and map files:
+*.ts
+*.map
+
+# Unignore type files
+!*.d.ts

README.md

@@ -1,5 +1,6 @@
 # bolt04
 [![Build Status](https://travis-ci.com/arik-so/bolt04.svg?branch=master)](https://travis-ci.com/arik-so/bolt04)
+[![Coverage Status](https://coveralls.io/repos/github/arik-so/bolt04/badge.svg?branch=master)](https://coveralls.io/github/arik-so/bolt04?branch=master)
 
 A utility for Lightning Network's BOLT 4 specification.