Update online reference and tutorials

[codeanticode]

The reference needs better text and formatting, and the tutorials are falling behind the updates of the mode.

[SyamSundarKirubakaran]

@codeanticode Can you please elaborate.. Does this deal with updating Readme.md for Processing-android

[xoxo16]

Can i solve this issue

[ranaaditya]

Hyperlink error on tutorial page click #631

Hi @codeanticode , I can see Rupesh's PR solved one of the existing issue for the similar case, can you elaborate little bit more about this issue please ?

This will help others in the community to take on issues.

Thanks,
Aditya Rana