Initial monorepo configuration

Created by: ryanyogan

This PR augments the directory structure to conform to a multi-package "monorepo"

Tree structure changes

create-react-app/
+-- .travis.yml
+-- CHANGELOG.md
+-- CONTRIBUTING.md
+-- LICENSE
+-- PATENTS
+-- README.md
+-- packages/
    +-- create-react-app/  [originally global-cli]
    |   +-- index.js
    |   +-- package.json  [maintaining independent packages]
    +-- react-scripts/  [originally root directory]
    |   +-- bin/
    |   +-- config/
    |   +-- scripts/
    |   +-- template/  [originally in root directory]
    |   +-- .eslintrc.js
    |   +-- .gitignore
    |   +-- package.json [maintaining independent packages]
+-- tasks/
|   +-- e2e.sh
|   +-- release.sh

Status

Given this PR modifies a good portion of the application structure, it may go out of sync quickly.

This PR has been updated to reflect: master: 7c912b5ffe48eda1c8b0b6f005a117d5764eb0a6 on August 15th, 2016 at 12:15PM PDT

Please ping @ryanyogan if you are reviewing and it is no longer in sync.

How to test

• From the root directory run sh tasks/e2e.sh or cd packages/react-scripts && npm run e2e
• Manual install of CLI
  • cd packages/create-react-app
  • npm uninstall create-react-app -g we need to remove your official package temporarily
  • npm i . -g <-- this command will install from the local directory
  • Note: npm uninstall create-react-app -g when complete, you don't want this test to clash with the official package. Now you can go back to the official npm i create-react-app -g
• Further testing
  • cd packages/create-react-app && npm i cd packages/react-scripts && npm i && npm run create-react-app test-app
  • Test the build process: npm run build
    • You will now have a build folder in the root directory, don't forget to trash it.
  • Remember this will create an application named test-app in the packages/react-scripts directory, you will want to trash that once complete. You will also have a node_modules folder in both the packages/create-react-app folder and the packages/react-scripts folder, you will want to delete them with rm -rf node_modules in the respective directory.

Noteable changes / todo's

• I made changes that hop around directories in the tasks/e2e.sh file, I am not happy with them I think this file can be improved upon.
• Splitting up the paths file into separate modules in addition to making it a tad smarter would help in the future.
• I started toying around with Lerna.js in "independant" mode per @hzoo's advice and I found it to be quite nice. Perhaps this would be a nice next step, however I see other issues that should be cleaned up first.