Convert README to README.md

Use supported Markdown to describe how to work with Gitiles.

Change-Id: I2e35e95c7f450030b9fbd6e794c905bf6dbe83f2

README.md

diff --git a/README b/README.md
similarity index 67%
rename from README
rename to README.md
index 1514b2b..b604e0d 100644
--- a/README
+++ b/README.md
@@ -6,10 +6,12 @@
 access, no fancy Javascript, etc.
 
 
-BUILDING
+Building
+--------
 
-Gitiles requires Buck (http://facebook.github.io/buck/) to build.
+Gitiles requires [Buck](http://facebook.github.io/buck/) to build.
 
+```
   sudo apt-get install ant
   cd ${HOME}
   git clone https://github.com/facebook/buck.git
@@ -19,52 +21,74 @@
   cd /path/to/gitiles
   git submodule update --init
   buck build all
+```
 
 
-TESTING
+Testing
+-------
 
+```
   cd /path/to/repositories  # Don't run from the gitiles repo.
   /path/to/gitiles/tools/run_dev.sh
+```
 
-This will recompile and start a development server.
-Open http://localhost:8080/ to view your local copy of gitiles, which will serve
-any repositories under /path/to/repositories.
+This will recompile and start a development server.  Open
+http://localhost:8080/ to view your local copy of gitiles, which
+will serve any repositories under `/path/to/repositories`.
 
 
-ECLIPSE
+Eclipse IDE
+-----------
 
 If you'd like to use Eclipse to edit Gitiles, first generate a project file:
-  ./bucklets/tools/eclipse.py && ./bucklets/tools/eclipse.py --src
+
+```
+  ./bucklets/tools/eclipse.py --src
+```
 
 Import the project in Eclipse:
+
+```
   File -> Import -> Existing Projects into Workpace
+```
 
 The project only needs to be rebuilt if the source roots or third-party
 libraries have changed. For best results, ensure the project is closed in
 Eclipse before rebuilding.
 
 
-CODE REVIEW
+Code Review
+-----------
 
 Gitiles uses Gerrit for code review:
 https://gerrit-review.googlesource.com/
 
-Gitiles uses the "git push" workflow described here:
-http://gerrit.googlecode.com/svn/documentation/2.0/user-upload.html
-With the server https://gerrit.googlesource.com/gitiles
-You'll need a password from: https://gerrit.googlesource.com/new-password
+Gitiles uses the ["git push" workflow][1] with server
+https://gerrit.googlesource.com/gitiles.  You will need a
+[generated cookie][2].
+
+[1]: https://gerrit-review.googlesource.com/Documentation/user-upload.html#_git_push
+[2]: https://gerrit.googlesource.com/new-password
 
 Gerrit depends on "Change-Id" annotations in your commit message.
 If you try to push a commit without one, it will explain how to
 install the proper git-hook:
 
+```
 curl -Lo `git rev-parse --git-dir`/hooks/commit-msg \
     https://gerrit-review.googlesource.com/tools/hooks/commit-msg
 chmod +x `git rev-parse --git-dir`/hooks/commit-msg
+```
 
 Before you create your local commit (which you'll push to Gerrit)
 you will need to set your email to match your Gerrit account:
-git config --local --add user.email foo@bar.com
 
-Normally you'll create code reviews for pushes to master:
+```
+git config --local --add user.email foo@bar.com
+```
+
+Normally you will create code reviews by pushing for master:
+
+```
 git push origin HEAD:refs/for/master
+```