updated readme

Author: thewhitetulip

README.md

@@ -13,4 +13,9 @@ List:
 4. hex2int.py: we have a file EtherType, and we convert it to EtherType2, link for image: https://qph.is.quoracdn.net/main-qimg-cd53d1dd106f20dd19cff0197fb2ac05?convert_to_webp=true
 5. type.py: We have a pcap file of packet capture, and we have to print the EtherType for each packet, then we use this script to do so
 6. processarp.py: Reads a pcap file into python using scapy and produces a csv file as output in the following format: Timestamp, source MAC address, source IP address, Destination MAC address, Destination IP address
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+7. ceaser.py: implementing a simple ceaser cipher
+8. ceaserde.py: decrypting ceaser cipher
+9. mono.py: monoalphabetic cipher encryption
+10. monode.py: monoalphabetic cipher decryption
+11. removing_numbers.py: suppose you have a file which starts with numbers, then this script can remove the numbers from the file
+12. tables: generates mathematical tables