Add [Vartheme (Bootstrap 4 - SASS)] theme (~6.0)

https://www.drupal.org/project/vartheme_bs4

A base theme for Varbase standard websites.

Based on the Bootstrap Barrio theme (Bootstrap 4 - SASS).

Vartheme BS4 home page

Added the create-new-vartheme-bs4.sh bash file to generate Vartheme BS4 sub theme ( Bootstrap 4 ) SASS and updated the README.md for scripts

Create a Vartheme BS4 sub theme ( Bootstrap 4 ) SASS

Before we generate the new sub theme we need to have the following tools

1. npm and nodejs : Helps getting the bootstrap 4 and popper packages. Bootstrap standard build tools

$ curl -sL https://deb.nodesource.com/setup | sudo bash -
$ apt install nodejs
$ apt install build-essential

$ curl -L https://npmjs.com/install.sh | sh
$ apt install npm

2. Gulp : Helps to compile SASS to CSS

npm install gulp-cli -g
npm install gulp -D

After we make sure that we do have all the tools we could change directory in the terminal to:

$ cd PROJECT_DIR_NAME/docroot/profiles/varbase/scripts
$ bash ./create-new-vartheme-bs4.sh "THEME_NAME"

• Activate your new sub theme by going to Appearance in our Varbase site.
• Search for THEME_NAME of the generated new sub theme and click on Install and set as default.
• Go to the home page to check if the theme is showing up.
• then we can change directory to our sub theme in the terminal to test compile our SASS files to CSS

$ cd PROJECT_DIR_NAME/docroot/themes/custom/THEME_NAME
$ gulp
[10:55:40] Using gulpfile PROJECT_DIR_NAME/docroot/themes/custom/THEME_NAME/gulpfile.js
[10:55:40] Starting 'default'...
[10:55:40] Starting 'compile'...
[10:55:42] Finished 'compile' after 2.44 s
[10:55:42] Starting 'move_bootstrap_js_files'...
[10:55:43] Finished 'move_bootstrap_js_files' after 18 ms
[10:55:43] Starting 'move_popper_js_files'...
[10:55:43] Finished 'move_popper_js_files' after 3.89 ms
[10:55:43] Starting 'watch'...

We may want to increase our maximum watched SASS files by

$ echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p