Update ReadMe to explain the basic info.

Author: deepakhb2

README.md

@@ -1,3 +1,6 @@
-# data-structures-and-algorithm
-Using ruby.
-[![Run on Repl.it](https://repl.it/badge/github/deepakhb2/data-structures-and-algorithm)](https://repl.it/github/deepakhb2/data-structures-and-algorithm)
+# Data structures and algorithms
+The data structures and algorithms are implemented using ruby. I have also added few interview problems and I update this list as I work on problems.
+
+This can be run on repl.it by clicking below badge. On repl.it click on Run button to see the output for bubble sort and you understand how to run other ruby files.
+
+[![Run on Repl.it](https://repl.it/badge/github/deepakhb2/data-structures-and-algorithm)](https://repl.it/github/deepakhb2/data-structures-and-algorithm)