Update eff and eff language.

Author: SteveBarnett

sites/en/intro-to-rails/_working_effectively_and_efficiently.md

@@ -9,10 +9,10 @@ We highly recommend you do the following:
   * Bring up one window with two tabs
     * One for this content
     * One for interacting with your app.
-* Open your text editor and _do not ever close it_. We're not quitters.
-* Hide all extra applications. Turn off Twitter, IM, and all other distractions.
+* Open your text editor and don't close it.
+* Hide all extra applications. Turn off Twitter, Facebook, IM, and all other distractions.
 
 By minimizing the number of things you interact with, you reduce the
 amount of time spent switching between them and the context lost as
 you work through the lessons. Having 50 tabs open in your web
-browser gets confusing and wastes time.
+browser gets confusing.