Refactor CLI interface to follow unix standards

[kevaundray]

This is a summary of a conversation with Charlie.

Problem

The current CLI interface does not follow common unix standards.

Solution

• Use - to indicate whether we should print to stdout or print to a file. Example -o - vs -o filename
• When printing to stdout use raw binary

Note

• The doc comments should be modified appropriately in the cpp cli code to indicate that it is using raw binary.

[kevaundray]

Also adding that verify should now just return a 0 or 1 depending on whether we have successfully verified, instead of printing to stdout.

[kevaundray]

Before I was doing std::cout << vector << stdendl but this was wrong because the << operator does not print raw bytes to stdout. Will need to add a separate method that pipes each individual byte to stdout for this