Minor cargo readme change

Merge pull request #617 from QKaiser/fix-pfs-path-traversal

fix path traversal in PFS extractor script

Merge pull request #556 from ReFirmLabs/unpriv_user_exec

Symlink directory traversal security fix

Updated version number for release

Merge pull request #531 from ReFirmLabs/530-fix-sasquatch-in-binwalk-…

…docker-container

530 fix sasquatch in binwalk docker container

Merge pull request #528 from cclauss/patch-1

Ubuntu Focal is Python 3 by default

Update README.md

Updated version to 2.2.0

Added images/README.md

Merge pull request #55 from revmischa/master

fix building on OSX with proper shared object extension