Remove emojis. So sad. [ci skip]

Author: JuanitoFatas

README.md

@@ -1,6 +1,4 @@
-**GitHub currently disables the rendering of emoji in large document, that's why you see the strange `::` stuff (they are emojis!).**
-
-Fast Ruby :dash: :dash: :dash: :rocket: [![Build Status](https://travis-ci.org/JuanitoFatas/fast-ruby.svg?branch=travis)](https://travis-ci.org/JuanitoFatas/fast-ruby)
+Fast Ruby [![Build Status](https://travis-ci.org/JuanitoFatas/fast-ruby.svg?branch=travis)](https://travis-ci.org/JuanitoFatas/fast-ruby)
 =======================================================================================================================================================================
 
 In [Erik Michaels-Ober](https://github.com/sferik)'s great talk, 'Writing Fast Ruby': [Video @ Baruco 2014](https://www.youtube.com/watch?v=fGFM_UrSp70), [Slide](https://speakerdeck.com/sferik/writing-fast-ruby), he presented us with many idioms that lead to faster running Ruby code. He inspired me to document these to let more people know. I try to link to real commits so people can see that this can really have benefits in the real world. **This does not mean you can always blindly replace one with another.  It depends on the context (e.g. `gsub` versus `tr`). :warning: Use with caution!**
@@ -11,8 +9,6 @@ All results listed in README.md are :running: with Ruby 2.2.0p0 on OS X 10.10.1.
 
 **Let's write faster code, together! <3**
 
-:two_men_holding_hands: :two_women_holding_hands: :two_men_holding_hands: :two_men_holding_hands: :two_women_holding_hands: :couple: :two_women_holding_hands: :two_men_holding_hands: :two_women_holding_hands: :couple: :two_men_holding_hands: :couple: :dancers: :couple: :two_men_holding_hands: :two_men_holding_hands: :two_men_holding_hands: :two_men_holding_hands: :couple: :two_men_holding_hands: :two_women_holding_hands: :two_women_holding_hands: :couple: :couple: :two_men_holding_hands: :two_women_holding_hands: :two_men_holding_hands: :dancers: :couple:
-
 Measurement Tool
 -----------------
 
@@ -694,8 +690,6 @@ Brought to you by [@JuanitoFatas](https://twitter.com/juanitofatas)
 
 Feel free to talk with me on Twitter! <3
 
-:gift_heart: :revolving_hearts: :gift_heart: :sparkling_heart: :blue_heart: :two_hearts: :heart: :heartpulse: :green_heart: :revolving_hearts: :heartbeat: :yellow_heart: :heartpulse: :heartbeat: :heart_decoration: :blue_heart: :hearts: :cupid: :hearts: :yellow_heart: :green_heart: :cupid: :heart: :heart: :yellow_heart: :purple_heart: :purple_heart: :heart_decoration: :sparkling_heart:
-
 
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