Re-arrange the documentation structure for readability

[miphe]

At the moment the structure of documentation is as follows:

root
  |__README.md
  |__example/
    |__README.md
    |__chart/
      |__README.md
      |__dimension/
        |__README.md
      etc.....
    |__tooltip/
      |__README.md
      |__dimension/
        |__README.md
      etc.....

All documents are named README.md and are organized under a directory of concern. A more accessible structure would be:

root
  |__README.md
  |__example/
    |__README.md
    |__chart/
      |__README.md
      |__dimension.md
      |__font.md
      |__position.md
      etc.....
    |__tooltip/
      |__README.md
      |__dimension.md
      |__font.md
      |__position.md
      etc.....

The function of files named README.md is to give an overview of the content of the current directory, as this file will be shown by GitHub in it's preview when navigating throughout the repository.

[anteAdamovic]

I was intending to write an example for each of the directories to show the use of those functions and how to alter the properties of the chart itself. But I can rearrange them if necessary in the next release.

[miphe]

I see, when that is done this issue can be considered obsolete and closed.