Added initial version of wp scaffold _s
Instead of using bash unzip, using WP_CLI native theme install, with optional activate
changed shell_exec to properly use wp_remote_post, unzip, and unlink the temp file
added man-src page for scaffold _s, tidied up formatting.
added default timeout and generic theme description from author and theme name.
removed spaces in the synopsis
fixed undefined variables
added success message if remote request code is 200
Merge pull request #285 from drrobotnik/master

Added wp scaffold _s