Revision to docs

@ikiril01 

I merged the gh wiki content from each repo into the pages, and hopefully captured their intent.

Wasn't sure about the "1.0" vs. 2.0 versions, so I left a link to it on the home page. Assume it's deprecated but idk 

The "schema proposals" were left on the wiki

Couldn't wrap my brain around "Pattern vs. Instance" and "Capturing Custom Tool Properties" sections of the suggested practices portion, so I'm just leaving that prose in. 

-_Ben