Update README.md

Author: karthiks2611

Data Structures and Algorithms/README.md

@@ -18,6 +18,12 @@
 
 - Merge Sort
 
+- Bubble Sort
+
+- Heap Sort
+
+- Insertion Sort  
+
 - Quick Sort (for numbers)
 
 - Quick Sort (for strings)
@@ -26,4 +32,4 @@
 
 - Recursive Binary Search
 
-- Selection Sort
+- Selection Sort