SDK: Improve JS Client Readme

[zJaaal]

Task

Right now the JS SDK client readme is covering installation of the SDK, configuration and basic use cases. But we need to add examples for basic use cases of the content API.

The content API just have one method at the moment, which is the getCollection but it is a method that uses a builder pattern to create complex queries, so we require basic use cases so the developers can have a simple guide of how it works.

We can see which methods it has and write use cases for them

Proposed Objective

Technical User Experience

Proposed Priority

Priority 3 - Average

Acceptance Criteria

• SDK JS Client Readme has all basic cases covered for the content API.
• Writing should be clear and easy to understand with basic knowledge on the API.
• Be sure that the methods have no missing docs or examples.

Assumptions & Initiation Needs

• You understand how the content API works in the SDK JS Client