[docs] Add getting started guide.

llvm-svn: 155578
diff --git a/lld/docs/development.rst b/lld/docs/development.rst
index 2b12e38..c24e83b 100644
--- a/lld/docs/development.rst
+++ b/lld/docs/development.rst
@@ -5,7 +5,7 @@
 
 lld is developed as part of the `LLVM <http://llvm.org>`_ project.
 
-.. todo:: Write "getting started" style instructions for developers.
+See the :ref:`getting started <getting_started>` guide.
 
 The project documentation is written in reStructuredText and generated using the
 `Sphinx <http://sphinx.pocoo.org/>`_ documentation generator. For more