Less code-style errors, More productivity!

"More developer friendly, Yay! 😃"

Approx 90% of the rules used now warn instead of throwing an error, so you can focus more on writing the logic, and not on formatting the code! Only the rules that throw an error and some exceptional warn rules like 'no-debugger' must be fixed by the developer.

Also, added some cool new badges in README.md thanks to Shields.io!