Further terminology in docs + link on README

Addressing a few spots where I looked for terminology and did not find what I was looking for. Input based on a recent [podcast with Mike](https://changelog.com/podcast/223)

README.md

 # Homebrew
-Features, usage and installation instructions are [summarised on the homepage](http://brew.sh).
+Features, usage and installation instructions are [summarised on the homepage](http://brew.sh). Terminology (e.g. the difference between a Cellar, Tap, Cask and so forth) is [explained here](docs/Formula-Cookbook.md#homebrew-terminology).
 
 ## Update Bug
 If Homebrew was updated on Aug 10-11th 2016 and `brew update` always says `Already up-to-date.` you need to run:

docs/FAQ.md

@@ -245,3 +245,6 @@ to with `brew link`.
 ### How can I specify different configure arguments for a formula?
 `brew edit $FORMULA` and edit the formula. Currently there is no
 other way to do this.
+
+### Is there a glossary of terms around?
+All your terminology needs can be [found here](docs/Formula-Cookbook.md#homebrew-terminology).
\ No newline at end of file

docs/Formula-Cookbook.md

@@ -9,9 +9,11 @@ A formula is a package definition written in Ruby. It can be created with `brew
 | **Keg**        | The installation prefix of a **Formula**                   | `/usr/local/Cellar/foo/0.1`                                     |
 | **opt prefix** | A symlink to the active version of a **Keg**               | `/usr/local/opt/foo `                                           |
 | **Cellar**     | All **Kegs** are installed here                            | `/usr/local/Cellar`                                             |
-| **Tap**        | An optional Git repository of **Formulae** and/or commands | `/usr/local/Homebrew/Library/Taps/homebrew/homebrew-versions`            |
+| **Tap**        | An optional Git repository of **Formulae** and/or commands | `/usr/local/Homebrew/Library/Taps/homebrew/homebrew-versions`   |
 | **Bottle**     | Pre-built **Keg** used instead of building from source     | `qt-4.8.4.mavericks.bottle.tar.gz`                              |
-
+| **Cask**       | An [extension of homebrew](https://github.com/caskroom/homebrew-cask) to install macOS native apps  | `/Applications/MacDown.app/Contents/SharedSupport/bin/macdown` |
+| **Brew Bundle**| An [extension of homebrew](https://github.com/Homebrew/homebrew-bundle) to describe dependencies    | `brew 'myservice', restart_service: true` |
+ 
 ## An Introduction
 
 Homebrew uses Git for downloading updates and contributing to the project.