FractalCrypt 2.0

Warning: This version is not compatible with FractalCrypt 1.0!

Changelog:
-CBC encryption mode has been changed to XTS mode
-The initialization vector generation function has been changed from md5 to pkbdf2 with 25k iterations
-The password generation function has been changed from sha256 to pkbdf2 with 10k iterations
-Small fixes

FractalCrypt 1.0

v1.0

Update README.md