[36] add composer.json to build

[jordanharris-6]

Description

36 - When adding the plugin to a site the composer file wasn't finding the branch main-built this is because the main-built branch doesn't have a composer.json file. When a repository includes a composer.json file, it defines aspects of itself that are important to how Composer manages the package and if it can't find a composer.json file it just ignores that branch.

Change Log

• Removed composer.json from the .deployignore file

Steps to test

Add the following to your composer.json file on a project which doesn't have the plugin currently

"repositories": [
        {
            "type": "vcs",
            "url": "https://github.com/bigbite/image-comparison.git"
        }
	],
    "require": {
    "composer/installers": "^2.0",
    "bigbite/image-comparison": "dev-chore/update-ci-built"
	},
	"extra": {
    "installer-paths": {
      "plugins/{$name}/": [
        "type:wordpress-plugin"
      ]
    }
  },
  "config": {
    "preferred-install": "dist",
    "allow-plugins": {
      "composer/installers": true
    }
  }

then run composer install

Once this is merged main-built will have the composer.json file and the instructions in the readme will work correctly.

Screenshots/Videos

http://bigbite.im/i/XKilri

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules