Enabling one line installing gcloud from .tar.gz with "i" mode

Homebrew!

Adding 'aws-efs-utils' and 'glances-server' packs. Now the install subcommand accepts a local path as well as url

Adding "c" sub-command for creating self-extracting .har files and adding packs as well as removing deprecated deps

Testing existence of file before removing

Adding -O option to the "binary" mode. Removing display of SHA1 match when it isn't provided and updating usage.

Usage is now like this:

har (i|install) [--sudo] [--ruby|--python|--python3] [-ys] [--sha1=<sum>] URL
har (b|binary)  [-ys] [--sha1=<sum>] URL [-O FILE]
har (g|get)     [-s] [--sha1=<sum>] URL [-O FILE]
har (x|extract) [-s] [--sha1=<sum>] URL [-C DIR]

Adding silent flag and sha1sum verification

har now does the download, chmod, and move to /usr/local/bin trick as well as download and run install scripts.

Adding git support

Initial version supporting tar, gz, bz2, zip and some combinations of those.