JavaScript integration package

[JakeCooper]

Need integration for a package which can be installed and used by developers.

Requires an init function to load the darklaunch codes from server, as well as bind the unique ID to use for user based dark launching. If uniqueID is not given, then the server will be responsible for keeping track of these users for their session (See #3)

Darklaunch.init(uniqueID)

Additionally require something along the lines of

if (Darklaunch.flag(code)) {
    // Has access to the darklaunched feature
} else {
    // No access to darklaunch.
}

flag(code) will check the darklaunch bundle in the store (Grabbed on init) and perform the series of operations required to determine if they're eligible to darklaunch. This step will only consist of lookup in the Darklaunch Store, which should get initiated when we call Darklaunch.init().

This integration package will only make requests to the /darklaunch_bundle endpoint (During init). This info will be cached and used for Darklaunch.flag(code) calls. This endpoint will require no authentication, unlike the any of the endpoints which deal with code creation or deletion.

[JakeCooper]

Following this, additional language integrations can be added, but let's start with JavaScript.