Merge branches 'issue-102-rabin-karp-fix' and 'master' of https://github.com/trekhleb/javascript-algorithms into issue-102-rabin-karp-fix

fixing a few typos in comments

* New function 'fromArray'

Function get array of Doubly Linked List Nodes, go through and append to currently list.

* New Test for new function 'fromArray'

* Minor changes

Minor changes about coding style.

* Twice defined

Parameter 'deletedTail' were defined twice.

* Update LinkedList.js

* Update LinkedList.js

* Simplify Rabin-Karp functionality

* Created Rabin Fingerprinting module within util directory

* Updated Rabin-Karp search to use rolling hash module
Incorporate tests from @dubzzz

어떤 종료의 -> 어떤 종류의

* docs: create README.ko_KR.md

Translate to Korean.

* docs: Add korean readme

* Update README.ko_KR.md

Update README.ko_KR.md for Trapping Rain Water problem.

* Add rain-terraces (trapping rain water) algorithm

* Fixed linting errors

* Fixed linting errors

* Create README.pl-PL.md

Translation to Polish

* Update README.md

adding Polish language to the list