Update description and examples

Changelog for 0.4.0:

Generated by Derek

Add region flag to delete command

Changelog for 0.3.9:

• PR #27 Fix: add the region flag to the delete command by @alexandrevilain

Generated by Derek

Add download command

Changelog for 0.3.8:

• PR #22 Add command to download inlets(pro) by @Waterdrips
• PR #25 Update an output to use env var not hard coded value by @Waterdrips

Generated by Derek

Fix issue with user data for inlets-pro

Changelog for 0.3.7:

The name changed from having a suffix for linux, to having no
suffix at all. Also the version is bumped to 0.4.3. The issue
was found whilst trying to setup inlets-pro with inletsctl. The
operator may also need a patch for this change.

Tested by running the command as root on a Linux PC, before it
failed, after it worked.

Generated by Derek

Add EC2 provisioner

Changelog for 0.3.6:

• PR #16 Add ec2 provisioner by @adamjohnson01

Usage:

inletsctl create --provider ec2 --help

Generated by Derek

Add output to "inlestctl create"

Changelog for 0.3.5:

• PR #20 Add output to create command for deletion of exit node by @adamjohnson01

Generated by Derek

Patch fix for new GCE zone

Changelog for 0.3.4:

• PR #14 Fix hardcoded value of zone for GCE by @utsavanand2

Generated by Derek

Add GCE as a provisioner

Changelog for 0.3.3:

• PR #10 Add GCE provisioning files to pkg by @utsavanand2

Generated by Derek

Use auth token with kfwd

Changelog for 0.3.2:

• Use auth token with kfwd - it seems inlets now requires one

Generated by Derek

Add "inletsctl kfwd" command

Changelog for 0.3.1:

• Add "inletsctl kfwd" command, see #11 for more details on how to use and for a video.

Generated by Derek