Adding ToC

README.md

@@ -4,6 +4,52 @@ A curated list of C good stuff. This list contains *only* [free software][13] fo
 
 This is released under the GNU Free Documentation License - its text is provided in the LICENSE file.
 
+Contents
+========
+
+- [Compilers](#compilers)
+- [Crypto](#crypto)
+- [Database](#database)
+- [Documentation Generation](#documentation-generation)
+- [Editors](#editors)
+- [Environments](#environments)
+- [Frameworks](#frameworks)
+- [Game Programming](#game-programming)
+  - [Engines](#engines)
+  - [Resources](#resources)
+- [Generic Programming](#generic-programming)
+- [Graphics](#graphics)
+- [Graphical User Interface](#graphical-user-interface)
+- [JSON](#json)
+- [Learning, Reference and Tutorials](#learning-reference-and-tutorials)
+  - [Online](#online)
+      - [Reference](#reference)
+      - [Beginner](#beginner)
+      - [Intermediate](#intermediate)
+      - [Advanced](#advanced)
+      - [Self-study courses](#self-study-courses)
+  - [Physical](#physical)
+      - [Reference](#reference-1)
+      - [Beginner](#beginner-1)
+      - [Intermediate](#intermediate-1)
+      - [Advanced](#advanced-1)
+- [Multimedia](#multimedia)
+- [Networking and Internet](#networking-and-internet)
+- [Numerical](#numerical)
+- [Parallel Programming](#parallel-programming)
+- [Regex](#regex)
+- [Serialization](#serialization)
+- [Source Code Collections](#source-code-collections)
+- [Standard Libraries](#standard-libraries)
+- [String Manipulation](#string-manipulation)
+- [Testing](#testing)
+- [Text Editor Extensions](#text-editor-extensions)
+  - [Emacs](#emacs)
+  - [Vim](#vim)
+- [Tools](#tools)
+- [Utilities](#utilities)
+- [XML](#xml)
+
 Compilers
 =========