Make it easier to contribute code and documentation

[RoneoOrg]

Hi there,

to submit a new feature, the workflow is the following:

• submit a first PR updating the code
• update exampleSite requires to switch to another Git branch
• and submit a second PR for exampleSite
• then updating the doc requires to
• clone another repo containing the wiki (no quick update in the browser is offered for wikis)
• setup a new remote repo
• submit a third separate PR

That's super complex, is there a way to make it easier?

Other themes use this structure:

• a single repo hosts the code and exampleSite
• this exampleSite contains the documentation, which is published along with the demo

Advantages:

• less Git knowledge is required
• a single PR contains every required modification, more chances are that the doc is updated on time