How-to: Install jedi-vim in python 2.7

Rationale:

• Although nowadays python3 becomes standard, in some servers the default python is still python2.7 (mostly RHEL servers).
• Using vim (or emacs) in remote works is a must. You may use GUI, but the setup is more complicated than CLI.
• Using vim without plugins is hard. We should use a minimum number of plugins. The most important plugin is code completion.
• Humans make errors inevitably. Code completion prevents typos.

Based on those rationales, this is one line command to install jedi-vim (including jedi itself!) in python 2.7.

git clone --recursive https://github.com/davidhalter/jedi-vim.git --branch 0.9.0 ~/.vim/bundle/jedi-vim

Note: you need to install vim-pathogen first to allow plugin installation via "bundle" directory.