fix incorrect description when running --help

reqwest native-tls-vendored only for musl builds

we adjusted the dependency list of only activate the **native-tls-vendored**
feature from reqwest for the musl based target.

The motivation is resolve the building issues (on github actions) where
openssl-sys was not able to work with the openssl installation from Ubuntu.

bumping to 0.1.3

activating native-tls-vendored on reqwest package

tracking initial development notes

bumping version to 0.1.2

adds a "why" section to the README

we also add the primary install command

quick and dirty test on dev