Use TF-IDF sim measure in search for vulnerabilities

README.md

exploitdb/ctf_search_db.db

exploitdb/ctfsetup/ctfcli.py

exploitdb/ctfsetup/ctfsearch.py

exploitdb/exploits/hardware/local/48644.c

exploitdb/exploits/hardware/webapps/48646.py

exploitdb/exploits/linux/webapps/48642.sh

exploitdb/exploits/linux/webapps/48643.txt

exploitdb/exploits/multiple/webapps/48649.txt

exploitdb/exploits/php/webapps/48647.txt

exploitdb/exploits/php/webapps/48648.txt

exploitdb/exploits/xml/remote/48650.txt