* feat: Update intro to currying
- Add solutions
- Add ES6 examples
* feat: Add solution to FP mutations
* feat: Add solution to function-programming map
- Add solutions, both vanilla and ES6 arrow functions
- Add JSON.stringify to console.log, makes it easier to see what the resulting output is rather than showing
e.g. [object, object, object]
* update: used the contributor's ES6 solution
Contributor originally had a non-ES6 solution and an ES6 solution. I removed the non-ES6 solution.