Update styleguide.md

Author: basarat

docs/styleguide/styleguide.md

@@ -186,10 +186,11 @@ Use [`tsfmt`](https://github.com/vvakame/typescript-formatter) to automatically
 
 ## Quotes
 
-* Prefer double quotes (`"`).
+* Prefer sing quotes (`'`).
 
-> Reasons: Allows easier copy paste of objects into JSON. Allows people to use other languages to work without changing their quote character. Allows you to use apostrophe s e.g. `He's not going.`.
+> Reason: More JavaScript teams do this (e.g. [airbnb](https://github.com/airbnb/javascript), [standard](https://github.com/feross/standard), [npm](https://github.com/npm/npm), [node](https://github.com/nodejs/node), [google/angular](https://github.com/angular/angular/), [facebook/react](https://github.com/facebook/react))
 
+> Double quotes are not without merit: Allows easier copy paste of objects into JSON. Allows people to use other languages to work without changing their quote character. Allows you to use apostrophe s e.g. `He's not going.`. But I'd rather not deviate from where the JS Community is fairly decided.
 
 * When you can't use double try back ticks (\`).