Refactor and use TypeScript:

- Migrate to TypeScript and TSLint
- Vendor ripple-address-codec (move dependency into this project)
- Add support for Travis CI (.travis.yml)
- Use "dist/*" for distribution files
- Bump version to 1.0.0-beta.0
- Add yarn.lock

packages/ripple-keypairs/test/utils-test.js

@@ -1,7 +1,7 @@
 'use strict' // eslint-disable-line strict
 
 const assert = require('assert')
-const utils = require('../src/utils')
+const utils = require('../dist/utils')
 
 describe('utils', () => {
   it('hexToBytes - zero', () => {