Custom lib documentation

[ChialiT]

Ensure other engineers can easily find which lib and function to use and why

[ChialiT]

move custom lib documentation to later week

[ChialiT]

extend date as its not complete

[ChialiT]

custom lib is developed and has a readme in the repo.
will revisit if this task is needed

[unidwell]

@ChialiT Let's close this one.

[ChialiT]

@unidwell should we update the README at least?

[unidwell]

Yes. I've updated it to reflect the code changes and linked the examples into the README.