Add a rough work-in-progress API Doc

[vddesai1871]

It's just a rough structure of the API Doc.
While trying to run it I found that hydrus can't show nested collections. (eg. collection of comments on a particular issue/article). I think we'll need to create an extra endpoint for 'apiname/Item/id/Collection'. Is it the right way to go or we can do something else as we did for nested objects. @Mec-iS @xadahiya @chrizandr

[Mec-iS]

Let's always remember that the pivot concept of our work are hypermedia. So we possibly want to return an hyperlink to the collection, not the full collection. same we did for nested object in Flock-Demo. Always take as example of output the Github API, it is the best balance between content and length of outputs.

[vddesai1871]

Yes that's what I have suggested, we can have a hyperlink to the endpoint of nested collection
something like

{ 
"@type": "Article", 
"@id": "api/articles/id", 
... 
"comments": "api/articles/id/comments", 
... 
}