Move the contributor related docs to contributor/ dir

Please refer http://specs.openstack.org/openstack/docs-specs/specs/pike/os-manuals-migration.html
for more details.

Change-Id: I7c8c76cf98c7538bf28c8fdb520121be4c1ca4c3
Depends-On: Ia750cb049c0f53a234ea70ce1f2bbbb7a2aa9454

doc/source/contributor/contributing.rst

@@ -1,4 +1,4 @@
 ============
 Contributing
 ============
-.. include:: ../../CONTRIBUTING.rst
+.. include:: ../../../CONTRIBUTING.rst

doc/source/contributor/index.rst

@@ -0,0 +1,26 @@
+Contributor's Guide
+===================
+
+Getting Started
+---------------
+
+If you are new to Magnum, this section contains information that should help
+you get started as a developer working on the project or contributing to the
+project.
+
+.. toctree::
+  :maxdepth: 1
+
+  Developer Contribution Guide <contributing>
+  Setting Up Your Development Environment <quickstart>
+  Running Tempest Tests <functional-test>
+
+There are some other important documents also that helps new contributors to
+contribute effectively towards code standards to the project.
+
+.. toctree::
+  :maxdepth: 1
+
+  Writing a Release Note <reno>
+  Adding a New API Method <api-microversion>
+  Changing Magnum DB Objects <objects>

doc/source/index.rst

@@ -53,25 +53,32 @@ Features
 * Integration with Neutron for Kubernetes multi-tenancy network security
 * Integration with Cinder to provide volume service for containers
 
-Developer Info
-==============
-
+User Documentation
+==================
 .. toctree::
    :maxdepth: 1
 
-   dev/quickstart
    policies.rst
    dev/cluster-type-definition.rst
    dev/kubernetes-load-balancer.rst
-   dev/functional-test.rst
-   dev/reno.rst
-   dev/api_microversion.rst
    api_microversion_history.rst
-   magnum-proxy.rst
-   contributing
    heat-templates
-   objects
+
+
+Contributor Guide
+=================
+.. toctree::
+   :maxdepth: 1
+
+   contributor/index
+
+Admin Guide
+===========
+.. toctree::
+   :maxdepth: 1
+
    gmr.rst
+   magnum-proxy.rst
 
 Work In Progress
 ================