Update README.md

Author: andrewbayd

README.md

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-# leetcode-solutions-java
+# Leetcode Solutions in Java
+
+This repository contains my solutions for Leetcode problems that I resolve occasionally using Java.
+
+In general, each class represents one problem, but for problems where additional classes needed all classes are inside one package.
+
+You can find complete list of problems here: https://leetcode.com/problemset/all/