Update README.md

Author: techieJarek

README.md

@@ -74,3 +74,8 @@ Given a 32-bit signed integer, reverse digits of an integer.
 
 [**NeedleInAHaystack.java**](https://github.com/techieJarek/coding-problems/blob/master/NeedleInAHaystack.java) - 
 Return the index of the first occurrence of needle in haystack, or -1 if needle is not part of haystack.
+
+[**MissingRanges.java**](https://github.com/techieJarek/coding-problems/blob/master/MissingRanges.java) - 
+Given a sorted integer array where the range of elements are [0, 99] inclusive, return its
+missing ranges.
+For example, given [0, 1, 3, 50, 75], return [“2”, “4->49”, “51->74”, “76->99”]