Reorganize website docs (#1806)

Updates to chisel3 documentation for website:
* guard code examples with mdoc and fix errors encountered along the way
* move some website content here vs splitting the content across two repos
* Bring in the interval-types and loading memories content so that it will be visible from the website
* remove all references to the wiki (deprecated)
* Remove reference to Wiki from the README
* fix tabbing and compile of chisel3-vs-chisel2 section
* Appendix: faqs now guarded and compile
* FAQs: move to resources section

1 files changed, 41 insertions, 0 deletions

diff --git a/docs/src/introduction.md b/docs/src/introduction.md
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+---
+layout: docs
+title:  "Introduction"
+section: "chisel3"
+---
+
+# An Introduction to Chisel
+
+_Chisel_ (Constructing
+Hardware In a Scala Embedded Language) is a hardware
+construction language embedded in the high-level programming language
+Scala.
+ Chisel is a library of special class
+definitions, predefined objects, and usage conventions within [Scala](https://www.scala-lang.org/),
+so when you write Chisel you are actually writing a Scala
+program that constructs a hardware graph.
+As you gain experience and want to make your code simpler or more
+reusable, you will find it important to leverage the underlying power
+of the Scala language. We recommend you consult one of the excellent
+Scala books to become more expert in Scala programming.
+
+For a tutorial covering both Chisel and Scala, see the 
+[**online Chisel Bootcamp**](https://mybinder.org/v2/gh/freechipsproject/chisel-bootcamp/master).
+
+For quick reference "How-To" guides see the [Cookbooks](cookbooks/cookbooks).
+
+For a deeper introduction to key concepts in  Chisel see the [Explanations](explanations/explanations).
+
+The [API Documentation](https://www.chisel-lang.org/api/) gives the detailed reference for the Chisel source code.
+Note that previous versions can be found via the sidebar menu at [https://www.chisel-lang.org/chisel3].
+
+The [Resources](resources/resources) provides links to other useful resources for learning and working with Chisel.
+
+The [Appendix](appendix/appendix) covers some more advanced topics.
+
+The [Developers](developers/developers) section provides information for those working on the Chisel library itself.
+
+>Throughout these pages, we format commentary on our design choices as in
+this paragraph.  You should be able to skip the commentary sections
+and still fully understand how to use Chisel, but we hope you'll find
+them interesting.