update style guide

Author: a0viedo

STYLE-GUIDE.md

@@ -54,6 +54,10 @@
     your point, not as complete running programs. If a complete running program
     is necessary, include it as an asset in `assets/code-examples` and link to
     it.
+* When using underscores, asterisks and backticks please use proper escaping (**\\\_**, **\\\*** and **\\\`** instead of **\_**, **\*** and **\`**)
+* References to constructor functions should use PascalCase
+* References to constructor instances should be camelCased
+* References to methods should be used with parenthesis: `socket.end()` instead of `socket.end`
 
 [plugin]: http://editorconfig.org/#download
 [Oxford comma]: https://en.wikipedia.org/wiki/Serial_comma