commit 8f3918d7408f5434f16964d68a8ce58570215f3c
author Yohei Yukawa <yukawa@chromium.org> Mon Oct 12 22:27:18 2015
committer Yohei Yukawa <yukawa@chromium.org> Mon Oct 12 22:27:18 2015
tree 75db94144e6dee49970799cfc49990a80761eb5d
parent c3d861c8bca42f942e829b77b0886275ae0a40b8

Promote documents in md-pages branch.

Seems that now both master branch and md-pages branch have docs/
directory, but only the latter looks to be maintained.
  https://chromium.googlesource.com/external/gyp/+/master/docs/
  https://chromium.googlesource.com/external/gyp/+/md-pages/docs/

This might be a bit confusing for users and contributors,
since they could be easily navigated to those documents in
master branch in the following steps.

  1. Search 'GYP' then be navigated to
     https://code.google.com/p/gyp
  2. Find 'Source' tab and click it to be navigated to
     https://code.google.com/p/gyp/wiki/Source?tm=4
  3. Find a new repository URL.
     https://chromium.googlesource.com/external/gyp
  4. Find a 'Hacking' guide w/o realizing that the document is
     a bit out of date.
     https://chromium.googlesource.com/external/gyp/+/HEAD/docs/Hacking.md

With this CL, hopefully users and contributors can find the
latest documents.

BUG=
R=dpranke@chromium.org

Review URL: https://codereview.chromium.org/1400043002 .