Merged the preface chapter into a single file

Author: nakov

.gitignore

@@ -1,10 +1,8 @@
 # Node rules:
-## Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+## Grunt intermediate storage
 .grunt
 
-## Dependency directory
-## Commenting this out is preferred by some people, see
-## https://docs.npmjs.com/misc/faq#should-i-check-my-node_modules-folder-into-git
+## NPM dependency directory
 node_modules
 
 # Book build output
@@ -17,19 +15,12 @@ _book
 
 **/*.DS_Store
 
-# Speedy-Git & ShadowGit files
-Speedy-Git.bat
-Shadow-Git.rb
-
 # VScode
 .vscode/*
 !.vscode/settings.json
 !.vscode/tasks.json
 !.vscode/launch.json
 !.vscode/extensions.json
-/resources/Prepress-Scripts/Prepress-Book-in-MS-Word/obj
-/resources/Prepress-Scripts/Prepress-Book-in-MS-Word/.vs
-/resources/Prepress-Scripts/Prepress-Book-in-MS-Word/bin
 
 # PyCharm
 .idea/*

SUMMARY.md

@@ -1,8 +1,5 @@
 * [Book "Programming Basics" with Python](README.md)
 * [Preface](chapter-00-preface.md)
-* [About SoftUni and SoftUni Judge](/chapter-00.1-about-softuni.md)
-* [How to Become a Software Developer?](chapter-00.2-how-to-become-a-programmer.md)
-* [More About the Book](chapter-00.3-about-the-book.md)
 * [1. First Steps in Programming](chapter-01-first-steps-in-programming.md)
 * [2.1. Simple Calculations](chapter-02-simple-calculations.md)
 * [2.2. Simple Calculations – Exam Problems](chapter-02-simple-calculations-exam-problems.md)

book.json

@@ -24,8 +24,7 @@
             "files": [
                 "./assets/js/repl.it-code-runner.js",
                 "./assets/js/video.js",
-                "./assets/js/top-menu.js",
-                "./assets/js/modal-popup.js"
+                "./assets/js/top-menu.js"
             ]
         }
     },