Arguments to Binary addition solution

Author: PaulNoth

README.md

@@ -19,3 +19,4 @@ My Codewars solutions in various languages.
  - [Get the Middle Character (7 kyu)](https://www.codewars.com/kata/get-the-middle-character) [[solution](https://github.com/PaulNoth/codewars/blob/master/get-the-middle-character/solution.md)] [[java](https://github.com/PaulNoth/codewars/blob/master/get-the-middle-character/Kata.java)] [[javascript](https://github.com/PaulNoth/codewars/blob/master/get-the-middle-character/kata.js)]  
  - [Basic variable assignment (8 kyu)](https://www.codewars.com/kata/basic-variable-assignment) [[solution](https://github.com/PaulNoth/codewars/blob/master/basic-variable-assignment/solution.md)] [[javascript](https://github.com/PaulNoth/codewars/blob/master/basic-variable-assignment/kata.js)]  
  - [Not so black box (8 kyu)](https://www.codewars.com/kata/not-so-black-box) [[solution](https://github.com/PaulNoth/codewars/blob/master/not-so-black-box/solution.md)] [[javascript](https://github.com/PaulNoth/codewars/blob/master/not-so-black-box/kata.js)]  
+ - [Arguments to Binary addition (8 kyu)](https://www.codewars.com/kata/arguments-to-binary-addition) [[solution](https://github.com/PaulNoth/codewars/blob/master/arguments-to-binary-addition/solution.md)] [[javascript](https://github.com/PaulNoth/codewars/blob/master/arguments-to-binary-addition/kata.js)]  

arguments-to-binary-addition/kata.js

@@ -0,0 +1,9 @@
+function arr2bin(arr){
+  let sum = 0;
+  arr.forEach(i => {
+    if(typeof i === 'number') {
+      sum += i;
+    }
+  });
+  return sum.toString(2);
+}

arguments-to-binary-addition/solution.md

@@ -0,0 +1,3 @@
+### Arguments to Binary addition
+
+First I filtered only numbers and then add them to calculated sum. After that I converted the sum to binary format.