Added use case to readme

Author: harshareddy794

Hashing file/app.py

@@ -36,9 +36,7 @@ def write_content(hashed_content):
   new_file=open('Hased data.txt','w')
   new_file.write(hashed_content)
   new_file.close()
-
-
-
+  print("Done writing data to file hash data.txt")
 
 if __name__ == "__main__":
     help()

Hashing file/readme.md

@@ -7,4 +7,19 @@ Hashing a file is a python script which takes data from a text file and hash it
 * SHA512
 
 
-It will store all the hashed data into a new text file called as **Hased data.txt**
+It will store all the hashed data into a new text file called as **Hased data.txt**
+
+### Installing required libraries
+
+`` pip install -r"requirements.txt" ``
+
+
+### Using script 
+
+* `` python app.py <name of the file to hash> ``
+
+* Script will display avaliable hasing methods
+
+* Enter hashing algorithm that you want to hash
+
+* A file with name hash data.txt with hashed content will be saved in same directory