remove a redundant period in README.md

change subtitle for crater-cli

update manpage for 'uninstall'

add details about commands in README.md

improve parsing of command parameters for various commands

add details about shorter 'fetch' in README.md

add details about 'fetch' in README.md

implement 'fetch' as a remote command

fix error while copying manpage

remove dependency on rsync

ensure /usr/local/share/man

fix an error in executing commands

update README.md for shorter install command

fill-in the steps for install, uninstall and update

start with basic implementation for list