Updates for new monorepo packages (#25)

* Update badges

* Add badges

* Cleanup scripts

* Shorthand

* Align build spec

* User @polkadot/api-jsonrpc dev dep

* Update deps

test/mocha.config.js

@@ -1,8 +0,0 @@
-// ISC, Copyright 2017 Jaco Greeff
-
-const chai = require('chai');
-const sinonChai = require('sinon-chai');
-
-chai.use(sinonChai);
-
-global.expect = chai.expect;

test/mocha.opts

@@ -1 +0,0 @@
--r ./test/mocha.config