Remove duplicate Purescript By Example book link (#279)

Author: milesfrain

CONTRIBUTORS.md

@@ -65,6 +65,7 @@ If you would prefer to use different terms, please use the section below instead
 | [@AidanDelaney](https://github.com/AidanDelaney) | Aidan Delaney | [CC BY-NC-SA 3.0](https://creativecommons.org/licenses/by-nc-sa/3.0/deed) |
 | [@BebeSparkelSparkel](https://github.com/BebeSparkelSparkel) | William Rusnack | [CC BY-NC-SA 3.0](https://creativecommons.org/licenses/by-nc-sa/3.0/deed) |
 | [@archaeron](https://github.com/archaeron) | archaeron | [CC BY-NC-SA 3.0](https://creativecommons.org/licenses/by-nc-sa/3.0/deed) |
+| [@milesfrain](https://github.com/milesfrain) | Miles Frain | [CC BY-NC-SA 3.0](https://creativecommons.org/licenses/by-nc-sa/3.0/deed) |
 
 ### Contributors using Modified Terms
 

README.md

@@ -12,7 +12,6 @@ This repository is a collaborative effort, so please feel free to make a pull re
 ### Getting Started
 
 - [Getting Started](guides/Getting-Started.md): Download PureScript and build your first project
-- [PureScript By Example](https://leanpub.com/purescript/read): A book about PureScript. Learn functional programming for the web by solving practical problems
 - [Try PureScript](http://try.purescript.org): Try PureScript in your browser
 
 ### Learning