Moved to Algorithms and updated README.md

Author: mohit-gogitter

DataStructures/Stack/BalancedParenthesesChecker.cs renamed to Algorithms/Stack/BalancedParenthesesChecker.cs

@@ -179,6 +179,10 @@ find more than one implementation for the same objective but using different alg
     * [A057588 Kummer Numbers](./Algorithms/Sequences/KummerNumbersSequence.cs)
     * [A019434 Fermat Primes](./Algorithms/Sequences/FermatPrimesSequence.cs)
     * [A181391 Van Eck's](./Algorithms/Sequences/VanEcksSequence.cs)
+  * [Stack](./Algorithms/Stack)
+      * [Next Greater Element](./DataStructures/Stack/NextGreaterElement.cs)
+      * [BalancedParenthesesChecker](./DataStructures/Stack/BalancedParenthesesChecker.cs)
+      * [Reverse Stack](./DataStructures/Stack/ReverseStack.cs)
   * [String](./Algorithms/Strings)
     * [Similarity](./Algorithms/Strings/Similarity/)
       * [Cosine Similarity](./Algorithms/Strings/Similarity/CosineSimilarity.cs)
@@ -242,9 +246,6 @@ find more than one implementation for the same objective but using different alg
     * [Array-based Stack](./DataStructures/Stack/ArrayBasedStack.cs)
     * [List-based Stack](./DataStructures/Stack/ListBasedStack.cs)
     * [Queue-based Stack](./DataStructures/Stack/QueueBasedStack.cs)
-    * [Next Greater Element](./DataStructures/Stack/NextGreaterElement.cs)
-    * [BalancedParenthesesChecker](./DataStructures/Stack/BalancedParenthesesChecker.cs)
-    * [Reverse Stack](./DataStructures/Stack/ReverseStack.cs)
   * [Heap](./DataStructures/Heap)
     * [Min-Max Heap](./DataStructures/Heap/MinMaxHeap.cs)
     * [Binary Heap](./DataStructures/Heap/BinaryHeap.cs)