updated book links and descriptions

Author: learnbyexample

README.md

@@ -1,12 +1,11 @@
 # Scripting Course
 
-A reference guide to Linux command line, Vim and Scripting
+Books, reference guides and resources on Regular Expressions, CLI one-liners, Scripting Languages and Vim.
 
-### Ebooks
+## Ebooks
 
 Free to read online versions:
 
-* [100 Page Python Intro](https://learnbyexample.github.io/100_page_python_intro/)
 * [Python re(gex)?](https://learnbyexample.github.io/py_regular_expressions/)
 * [JavaScript RegExp](https://learnbyexample.github.io/learn_js_regexp/)
 * [Ruby Regexp](https://learnbyexample.github.io/Ruby_Regexp/)
@@ -15,9 +14,11 @@ Free to read online versions:
 * [GNU awk](https://learnbyexample.github.io/learn_gnuawk/)
 * [Ruby one-liners cookbook](https://learnbyexample.github.io/learn_ruby_oneliners/)
 * [Perl one-liners cookbook](https://learnbyexample.github.io/learn_perl_oneliners/)
+* [100 Page Python Intro](https://learnbyexample.github.io/100_page_python_intro/)
 * [Practice Python Projects](https://learnbyexample.github.io/practice_python_projects/)
 * [Command line text processing with GNU Coreutils](https://learnbyexample.github.io/cli_text_processing_coreutils/) — work-in-progress
 * [Command line text processing with Rust tools](https://learnbyexample.github.io/cli_text_processing_rust/) — work-in-progress
+* [Vim reference guide](https://learnbyexample.github.io/vim_reference/) — work-in-progress
 
 :information_source: :moneybag: You can buy PDF/EPUB versions from [Gumroad](https://learnbyexample.gumroad.com/) or [Leanpub](https://leanpub.com/u/learnbyexample)
 
@@ -27,10 +28,9 @@ Free to read online versions:
 * [Command Line Text Processing](https://github.com/learnbyexample/Command-line-text-processing) — From finding text to search and replace, from sorting to beautifying text and more
 * [Python Basics](https://github.com/learnbyexample/Python_Basics) — older version of *100 Page Python Intro*
 * [Ruby Scripting](https://github.com/learnbyexample/Ruby_Scripting) — examples based tutorial for Ruby scripting
-* [Vim Reference](https://github.com/learnbyexample/vim_reference) — Vim reference guide for beginner to intermediate users
 * [Perl Introduction](https://github.com/learnbyexample/Perl_intro) — Introductory course for Perl 5 through examples, geared towards VLSI engineers
 
-### Blog
+## Blog
 
 https://learnbyexample.github.io/