Progress Indicator

Added a percentage progress indicator while crunching checksums.

Linux Build

Added a Makefile for easy building between Win/Linux.
I'll also be attaching the Linux binary in releases.

v1.0.1

Quick fix on something I missed in 1.0.0, functionally identical to 1.0.0.

Initial Release

Supports:

• CRC32
• MD5
• SHA-1
• SHA-256