GitHub: How to download specific folder:
Option A) https://downgit.github.io/#/home
Option B) http://kinolien.github.io/gitzip/
svn ls https://github.com/USER/REPO/branches/branch_Name/Folder_Name/
svn export https://github.com/USER/REPO/branches/branch_Name/Folder_Name/
$ PATH=$(pyenv root)/shims:$PATH