updated readme to reflect changes in script and more details on vim conf
removed unused plugins from vim install logic, added json syntax

also added flag to install public keys.
added new flag to readme.
changed gopath to hidden directory and symlinked to bin.
changed users home folder bin to a hidden directory.
reduced vim packages to simplify things.
changed order of conditions for install_skel logic
fixed logic order in install, reduced mkdir line

added ignore for log file to .gitignore