Update README and CONTRIBUTING file. [ci skip]

- README
  * clarify :: is emoji
  * Update benchmark template
  * note for benchmark-ips version
  * Link to "Less idiomatic but with significant performance ruby"
  * Link to fasterer
  * Add code license
- CONTRIBUTING
  * Add note for submitting an entry
  * Add note on how to run benchmark
  * Add license info

Author: JuanitoFatas

CONTRIBUTING.md

@@ -8,4 +8,38 @@ These idioms list here are trying to satisfiy following goals:
 
 [![GOALS](/images/Goals.png)](https://speakerdeck.com/sferik/writing-fast-ruby?slide=11)
 
-[JuanitoFatas](https://twitter.com/juanitofatas)
+## Note on entry
+
+Fast code first.
+
+```ruby
+require 'benchmark/ips'
+
+def fast
+end
+
+def slow
+end
+
+Benchmark.ips do |x|
+  x.report('fast code description') { fast }
+  x.report('slow code description') { slow }
+  x.compare!
+end
+```
+
+Run your result:
+
+```
+$ ruby -v code/your-new/entry.rb
+```
+
+Thanks in advance!!! Look forward to learning more from you!
+
+<3 [JuanitoFatas](https://twitter.com/juanitofatas)
+
+###### License
+
+<small>The documentation is [CC BY-SA 4.0 (International)](https://github.com/JuanitoFatas/fast-ruby#license).</small>
+
+<small>And code will be [CC0 1.0 Universal](https://github.com/JuanitoFatas/fast-ruby#code-license).</small>

README.md

@@ -1,4 +1,4 @@
-**GitHub currently disable the rendering of emoji in large document, that's why you see these strange `::` stuff.**
+**GitHub currently disable the rendering of emoji in large document, that's why you see these 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)
 =======================================================================================================================================================================
@@ -16,22 +16,22 @@ All results listed in README.md :running: with Ruby 2.2.0p0 on OS X 10.10.1. Mac
 Measurement Tool
 -----------------
 
-Use [benchmark-ips](https://github.com/evanphx/benchmark-ips).
+Use [benchmark-ips](https://github.com/evanphx/benchmark-ips) (2.0+).
 
 ### Template
 
 ```ruby
 require 'benchmark/ips'
 
-def slow
+def fast
 end
 
-def fast
+def slow
 end
 
 Benchmark.ips do |x|
-  x.report('slow') { slow }
-  x.report('fast') { fast }
+  x.report('fast code description') { fast }
+  x.report('slow code description') { slow }
   x.compare!
 end
 ```
@@ -609,10 +609,17 @@ Comparison:
    getter_and_setter:  1660021.9 i/s - 1.12x slower
 ```
 
+
+## Less idiomatic but with significant performance ruby
+
+Checkout: https://github.com/JuanitoFatas/fast-ruby/wiki/Less-idiomatic-but-with-significant-performance-diffrence
+
+
 ## Submit New Entry
 
 Please! [Edit this README.md](https://github.com/JuanitoFatas/fast-ruby/edit/master/README.md) then [Submit a Awesome Pull Request](https://github.com/JuanitoFatas/fast-ruby/pulls)!
 
+
 ## Something went wrong
 
 Code example is wrong? :cry: Got better example? :heart_eyes: Excellent!
@@ -637,13 +644,32 @@ Feel free to talk with me on Twitter! <3
 
 - [Benchmarking Ruby](https://speakerdeck.com/davystevenson/benchmarking-ruby)
 
-- [davy/benchmark-bigo](https://github.com/davy/benchmark-bigo) - Provides Big O notation benchmarking for Ruby
+  Talk by Davy Stevenson @ RubyConf 2014.
+
+- [davy/benchmark-bigo](https://github.com/davy/benchmark-bigo)
+
+  Provides Big O notation benchmarking for Ruby.
 
 - [The Ruby Challenge](https://therubychallenge.com/)
 
+  Talk by Prem Sichanugrist @ Ruby Kaigi 2014.
+
+- [Fasterer](https://github.com/DamirSvrtan/fasterer)
+
+  Make your Rubies go faster with this command line tool.
+
 
 ## License
 
 ![CC-BY-SA](CC-BY-SA.png)
 
 This work is licensed under a [Creative Commons Attribution-ShareAlike 4.0 International License](https://creativecommons.org/licenses/by-sa/4.0/).
+
+
+## Code License
+
+### CC0 1.0 Universal
+
+To the extent possible under law, @JuanitoFatas has waived all copyright and related or neighboring rights to "fast-ruby".
+
+This work belongs to the community.