Add a purpose to practical-react-components

[lekoaf]

Improve documentation by adding a purpose for this component library.

• Why should anyone choose practical-react-components?
• What do we do better than anyone else?
• Where do we shine?
• Why did we choose to develop this library?

[HassanBahati]

@lekoaf i am interested in contributing to close this issue...please help provide more context on what to include in the sections

• Why should anyone choose practical-react-components?
• What do we do better than anyone else?
• Where do we shine?
• Why did we choose to develop this library?

[lekoaf]

@HassanBahati Have you ever used this library?