Create a documentation compatible to ReadTheDocs

[zodman]

Related to the issue #81 missing task

We had the documentation on the README.md, create the documentation on readmethedocs it is necessary?

@camilonova @aleksihakli

[camilonova]

I agree is not necessary. We can just use the README.md file

[zodman]

I agree too, it is enough the readme... @aleksihakli ? If you agree, I think we can close the #81

[aleksihakli]

I think README.md is good for this project. If the documentation expands or we wish to generate something from the source code then RTD is a good option, but using it to just display a README that is displayed on GitHub as well is a bit of an overkill.