Revising cds2014 samples based on first round of feedback.

native_client_sdk/src/doc/cds2014/cpp.rst

 .. _cds2014_cpp:
 
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 A Saga of Fire and Water - Codelab
 ##################################
 
 Introduction
 ------------
 
 .. include:: cpp_summary.inc
@@ skipping 55 matching lines @@
 Remarkably, not everyone enjoys the primal illusion of fire.
 
 Your task in this codelab is to transform the rising fire
 effect you see before you, into a beautiful, tranquil waterfall.
 This will require digging into some C++ code.
 
 Before you begin, you'll want to copy our fire program to a new name,
 since you might decide later that you like fire better, I know I do::
 
   cp fire.cc water.cc
+  git add water.cc
+  git commit -am "adding water"
 
 For this codelab, you'll only need to change `water.cc`.
 
 The task of turning fire into water involves two key challenges:
 
   * Alter the red-yellow palette of fire into a blue-green one.
   * Reverse upward rising flame into downward falling water.
   * Seed the waterfall from the top instead of the bottom.
 
 At this point you'll want to open up `water.cc` in the editor you
 picked earlier.
 
 I see a red door and I want it painted... blue
 ==============================================
 
 While PPAPI's 2D graphics API uses multi-component RGB pixels,
 our flame effect is actually monochrome. A single intensity
 value is used in the flame simulation. This is then converted
 to color based on a multi-color gradient.
 To alter the color-scheme, locate this palette, and exchange
-the red component for blue.
+the red component (first) with blue (third).
 
 Hint: Focus your energies on the CreatePalette function.
 
 You can test you changes at any time with::
 
   make water
 
 What goes up...
 ===============
 
 Now there's the small matter of gravity.
 While smoke, and well flame, rises, we want our water to go down.
 
 The simulation of fire loops over each pixel,
 bottom row to top row,
 diffusing "fire stuff" behind the sweep.
 You'll want to reverse this.
-Note the simulation buffer is stored in |row_major| from bottom to top.
-Accesses of + width and - width are used to reach rows above and below
-the current line.
-
-.. |row_major| raw:: html
-
-  <a href="http://en.wikipedia.org/wiki/Row-major_order"
-   target="_blank">Row-major order</a>
 
 Hint: You'll need to change the y loop direction in the UpdateFlames function.
 
 Up high, down low
 =================
 
 While you can now use the mouse to inject a trickle of water.
 The small line of blue at the bottom isn't much of a waterfall.
 Move it to the top to complete the effect.
 
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 For questions, concerns, and help contact us at
 `native-client-discuss@googlegroups.com
 <https://groups.google.com/forum/#!forum/native-client-discuss>`_.
 
 I hope this codelab has lit a fire in you to go out there,
 and bring an awesome C/C++ application to NaCl or PNaCl today!
 
 
 .. include:: ../nacldev/cleanup_app.inc