Wrapped script.js in an IIFE

[noahyonack]

Wrapped script.js in an IIFE so that variables are scoped to the anonymous function as opposed to the global window object.

[ryansydnor]

A few issues:

1. The manifest file only injects this script into https://console and NOT https://*.console. Please add that to the content_scripts section:

    "content_scripts": [
        {
            "matches": [
                "https://console.aws.amazon.com/*",
                "https://*.console.aws.amazon.com/*"
            ],
            "js": [
                "inject.js"
            ]
        }
    ],

(this is not your fault! found the bug while testing your change.)

1. Bump the version number to 1.3!

[ryansydnor]

@noahyonack - ping!