Added Documentation to please.js and when.js

[meghanagoru]

Description

Added Documentation to please.js and when.js

Fixes : #(36)

Replace issue number with the issue number which is fixed in this PR

Screenshot

please.js

when.js

Type of Change

Please delete options that are not relevant.

• Documentation Update

CheckList

• [V] My code follows the guidelines of this project
• [V] I have performed a self-review of my own code
• [V] I have commented my code, particularly in hard-to-understand areas
• [V] My changes generate no new warnings
• [V] I have added tests/screenshots(if any) that prove my fix is effective or that my feature works