reorganize /dist to simplify CommonJS import

[rodneyrehm]

While discussing ally with @darobin, it became clear that using modules (with systems like browserify) is not ideal yet. We're assuming two things:

1. users will (at least currently) prefer CommonJS modules
2. users of AMD and ES6 can configure paths and are used to it

the current structure is

node_modules/ally.js/
├── dist
│   ├── ally.min.js (UMD)
│   ├── ally.min.js.map (UMD)
│   ├── amd
│   │   └── <AMD files>
│   └── common
│       └── <CJS files>
└── src
    └── <ES6 files>

the proposed structure is

node_modules/ally.js/
├── ally.min.js (UMD)
├── ally.min.js.map (UMD)
├── <CJS files>
├── amd
│   └── <AMD files>
└── src
    └── <ES6 files>

which would allow the following - without any configuration - in CommonJS based systems:

// load ally.min.js UMD bundle
var bundle = require('ally.js');
// load the same structure as the UMD bundle, but from CommonJS modules
var bundleFromModules = require('ally.js/ally');
// load a specific module
var module = require('ally.js/query/focusable');

---

You can configure AMD to load the UMD:

require.config({
  paths: {
    'ally.js': 'node_modules/ally.js/ally.min',
  }
});
// load ally.min.js UMD bundle
var bundle = require('ally.js');

OR you can configure AMD to load the modules:

require.config({
  paths: {
    'ally.js': 'node_modules/ally.js/amd',
  }
});
// load the same structure as the UMD bundle, but from AMD modules
var bundleFromModules = require('ally.js/ally');
// load a specific module
var module = require('ally.js/query/focusable');

The same applies to es6-module-loader.

[rodneyrehm]

The approach to solve this with minimal effort would be:

1. use the prepublish script to copy the meta files (package.json, README.md, CHANGELOG.md, LICENSE.txt) to dist
2. copy src to dist/src
3. move dist/common/* to dist/*
4. remove "files" from dist/package.json

and run npm publish dist to deploy the dist rather than the project root.

[rodneyrehm]

available to test in 1.0.0-beta.8