Add a TOC in the coding guidelines

CODING_GUIDELINES.md

@@ -6,6 +6,31 @@ For programming languages other than C++ (e.g. JavaScript) used in this reposito
 **Note 2:** You can use the `uncrustify` program/tool to clean up any source file. Use it with the `uncrustify.cfg` configuration file found in the root folder. 
 **Note 3:** There is also a style for QtCreator but it doesn't cover all cases. In QtCreator `Tools->Options...->C++->Code Style->Import...` and choose the `codingStyleQtCreator.xml` file found in the root folder. 
 
+### Table Of Contents
+
+* [1. New lines & curly braces](#1-new-lines--curly-braces)
+ * [a. Function blocks, class/struct definitions, namespaces](#a-function-blocks-classstruct-definitions-namespaces)
+ * [b. Other code blocks](#b-other-code-blocks)
+ * [c. Blocks in switch's case labels](#c-blocks-in-switchs-case-labels)
+ * [d. If-else statements](#d-if-else-statements)
+ * [e. Single statement if blocks](#e-single-statement-if-blocks)
+ * [f. Acceptable conditions to omit braces](#f-acceptable-conditions-to-omit-braces)
+ * [g. Brace enclosed initializers](#g-brace-enclosed-initializers)
+* [2. Indentation](#2-indentation)
+* [3. File encoding and line endings.](#3-file-encoding-and-line-endings)
+* [4. Initialization lists.](#4-initialization-lists)
+* [5. Enums.](#5-enums)
+* [6. Names.](#6-names)
+ * [a. Type names and namespaces](#a-type-names-and-namespaces)
+ * [b. Variable names](#b-variable-names)
+ * [c. Private member variable names](#c-private-member-variable-names)
+* [7. Header inclusion order.](#7-header-inclusion-order)
+* [8. Include guard.](#8-include-guard)
+* [9. Misc.](#9-misc)
+* [10. Git commit message](#10-git-commit-message)
+* [11. Not covered above](#11-not-covered-above)
+---
+
 ### 1. New lines & curly braces ###
 
 #### a. Function blocks, class/struct definitions, namespaces ####