Fill in missing "patterns" topic

[pazams]

https://github.com/bulim/go-for-javascript-developers#patterns
Some things that might be good to point out:

• Ecma International is focus only on the JS spec, while the Go team is focused both on the golang spec and idioms/patterns
• The famous post by Crockford: "The World's Most Misunderstood Programming Language"
• How the JS community came up with patterns (Revealing Module Pattern)
• Addy Osmani's JS design patterns book

[pazams]

#12 Introduced patterns in the scope of Concurrency & Parallelism.
Other topics mentioned in this issue are nice to have in the introduction part.
Closing for now.