search package name availability and pkg info on npm,pypi and rubygems.
$ npm install -g pkgstat-cli
$ pkgstat --help
Usage: pkgstat [options]
Options:
-h, --help output usage information
-V, --version output the version number
-s , --search <pkg> search for pkg name availability in npm,pip and gems
--node <pkg_name> info on node pkg from npm
--python <pkg_name> info on python pkg from pypi
--ruby <pkg_name> info on ruby pkg from rubygems
