Add codecov

.travis.yml

@@ -3,4 +3,5 @@ node_js:
 - '0.12'
 script:
   - npm test --coverage
-  - npm run-script lint
+  - npm run codecov
+  - npm run lint

README.md

@@ -1,4 +1,4 @@
-# x-address-codec
+# x-address-codec [![NPM](https://img.shields.io/npm/v/x-address-codec.svg)](https://npmjs.org/package/x-address-codec) [![Build Status](https://img.shields.io/travis/ripple/x-address-codec/master.svg)](https://travis-ci.org/ripple/x-address-codec) [![codecov.io](http://codecov.io/github/ripple/x-address-codec/coverage.svg?branch=master)](http://codecov.io/github/ripple/x-address-codec?branch=master)
 
 This is a meta package, that exposes an api factory. It's really not as boring
 as it sounds. We only ask you bring your own hash

package.json

@@ -15,31 +15,32 @@
   },
   "devDependencies": {
     "assert-diff": "^1.0.1",
-    "babel": "^5.3.3",
-    "babel-core": "^5.3.2",
-    "babel-eslint": "^4.0.5",
-    "babel-loader": "^5.0.0",
-    "bn.js": "^2.0.5",
-    "coveralls": "~2.10.0",
-    "create-hash": "^1.1.1",
-    "eslint": "^1.2.1",
+    "babel": "^5.8.23",
+    "babel-core": "^5.8.25",
+    "babel-eslint": "^4.1.3",
+    "babel-loader": "^5.3.2",
+    "bn.js": "^3.2.0",
+    "codecov.io": "^0.1.6",
+    "coveralls": "~2.11.4",
+    "create-hash": "^1.1.2",
+    "eslint": "^1.6.0",
     "eventemitter2": "^0.4.14",
     "hash.js": "^1.0.3",
-    "istanbul": "~0.3.5",
-    "lodash": "^3.9.3",
+    "istanbul": "~0.3.21",
+    "lodash": "^3.10.1",
     "map-stream": "~0.1.0",
-    "mocha": "~2.1.0",
-    "nock": "^0.34.1",
-    "webpack": "~1.5.3",
-    "yargs": "~1.3.1"
+    "mocha": "~2.3.3",
+    "nock": "^2.13.0",
+    "webpack": "~1.12.2",
+    "yargs": "~3.26.0"
   },
   "scripts": {
     "build": "gulp",
     "compile": "babel -i runtime -d dist/npm/ src/",
     "compile-with-source-maps": "babel -i runtime -s -t -d dist/npm/ src/",
     "prepublish": "npm test && npm run lint && npm run compile",
     "test": "istanbul test _mocha",
-    "coveralls": "cat ./coverage/lcov.info | coveralls",
+    "codecov": "cat ./coverage/coverage.json | ./node_modules/codecov.io/bin/codecov.io.js",
     "lint": "if ! [ -f eslintrc ]; then curl -o eslintrc 'https://raw.githubusercontent.com/ripple/javascript-style-guide/es6/eslintrc'; fi; eslint -c eslintrc src/*.js"
   },
   "repository": {