Add a Philosophy section to the README

Describes the thought I had on what the limitation of hermit's scope
is.
Add a stub for the update command
Update the list of suggested hermit subcommands
Stub out updating with echo's
Stub out closer to actual functionality
Introduce a new variable in hermit add

This makes it more descriptive, allowing me to be isolated from which
file has the suffix.

The goal is to make it so that the file with the suffix is actually the
complete file, so we can avoid having to rename a file in the case of
redacting a committed file.
Have redaction remove the file and relink it

This lays more groundwork for changing which file has a suffix