Update toc and headings #3

03-code-generation/protobuf/README.adoc

@@ -1,14 +1,10 @@
 = Protobuf Code Generation
-
 :toc:
 :toc-placement!:
 
 toc::[]
 
-
-[[intro]]
-Introduction
-------------
+# Introduction
 
 This example shows how to generate source files using https://github.com/google/protobuf[protobuf].
 Protocol Buffers is a data serialization format from Google. A user provides a
@@ -29,9 +25,7 @@ $ tree
   * CMakeLists.txt - Contains the CMake commands you wish to run
   * main.cpp - The source file from the protobuf example.
 
-[[requirements]]
-Requirements
-~~~~~~~~~~~~
+# Requirements
 
 This example requires the protocol buffers binary and libraries to be installed.
 
@@ -42,13 +36,9 @@ This can be installed on Ubuntu using
 sudo apt-get install protobuf-compiler sudo apt-get install protobuf-compiler
 ----
 
-[[concepts]]
-Concepts
-~~~~~~~~
+# Concepts
 
-[[exported_variables]]
-Exported Variables
-^^^^^^^^^^^^^^^^^^
+## Exported Variables
 
 The variables exported by the CMake protobuf package and used in this example include:
 
@@ -59,9 +49,7 @@ The variables exported by the CMake protobuf package and used in this example in
 More variables are defined and can be found by examining the documentation at the
 top of your `FindProtobuf.cmake` file.
 
-[[generating-protobuf]]
-Generating Source
-^^^^^^^^^^^^^^^^^
+## Generating Source
 
 The protobuf CMake package includes a number of helper functions to make the
 code generation easier. In this example we are generating C++ source and use
@@ -78,9 +66,7 @@ The arguments are:
   * PROTO_HDRS- Name of the variable that will store the .pb.h files.
   * AddressBook.proto - The .proto file to generate code from.
 
-[[generated-files]]
-Generated Files
-^^^^^^^^^^^^^^^
+## Generated Files
 
 After the `PROTOBUF_GENERATE_CPP` function is called, you will have the above
 mentioned variables available. These will be marked as the output to a custom command
@@ -104,9 +90,7 @@ When changes are made to the .proto file, the associated source files will be
 autogenerated again. However, if no changes are made to the .proto file and you re-run
 make, then nothing will be done.
 
-[[building-the-example]]
-Building the Example
-~~~~~~~~~~~~~~~~~~~~
+# Building the Example
 
 [source,bash]
 ----