Add links to feature docs

Add links to feature docs

[Joseph Reynolds]

I want to make it easier to find documentation for features of OpenBMC.  
The README [1] file lists the features and links to the docs repo, but 
not all features are documented there, and I'm still new to BMCs, so it 
is hard for me to determine which docs to read.

I propose to add a link from each feature to its canonical 
documentation.  So if you see me asking question in this area, you'll 
know why.

- Joseph

[1]: 
https://github.com/openbmc/openbmc/blob/master/README.md#features-of-openbmc

Re: Add links to feature docs - created TOC

[Joseph Reynolds]

On 2018-12-05 17:31, Joseph Reynolds wrote:
> I want to make it easier to find documentation for features of
> OpenBMC.  The README ... file lists the features and links to the docs
> repo, but not all features are documented there, and I'm still new to
> BMCs, so it is hard for me to determine which docs to read.
> 
> I propose to add a link from each feature to its canonical
> documentation.  So if you see me asking question in this area, you'll
> know why.

I changed the OpenBMC feature list into a table of contents for OpenBMC 
features.  The old list needed to be updated and doesn't make it easy to 
find more information about OpenBMC features.  So I looked for docs and 
added links to the project's README.

Please review.
  - Let me know what features should be added or removed, or how to
    organize the list.

  - I tried to find all the feature documentation, but I need your
    help.  Please contribute doc links for your area and I will add them.
    I prefer for each feature to link to a single document, but I will
    take what I can get.

The review is here:
https://gerrit.openbmc-project.xyz/#/c/openbmc/openbmc/+/17056/

Thanks!
- Joseph