Simple command-line wrapper of Ruby-based Github Linguist

Since we are merely parsing the original Linguist command-line output, we need to install Linguist as usual. Assuming Linux:

1. setup RubyGems:

   apt install ruby-dev libssl-dev
   
   gem update --system

2. be sure Gems are installed to home directory, NOT system (no sudo) by adding to ~/.bashrc:

   # Install Ruby Gems to ~/gems
   export GEM_HOME=$HOME/gems
   export PATH=$HOME/gems/bin:$PATH

3. install Github Linguist:

   gem install github-linguist

pip install -e .

From Terminal:

pylinguist

You can also import as a Python module:

import pylinguist as pl

langs = pl.linguist('~/mypath')

PyLinguist parses text output from GitHub Linguist, which is a Ruby program.