Restore minimal build instructions to README.rst

Change-Id: I81e1021017c8122edb6b2675ebf36363b022de1e
Tuleap: #637

README.md

-# Ring
-
-Synchronization via submodules of the repositories of <https://ring.cx/> to states in which they work together + scripts to build for each platform easily.
-
-## Documentation
-
-Documentation on using the make-ring.py script can be found on [ring.readthedocs.org](https://ring.readthedocs.org/).
-
-You may also build the documentation yourself with ``make docs``. The documentation will be built in ``docs/build/html/``.

README.rst

+ring-project
+============
+
+This repository is the master repository for Ring. It contains a build script, make-ring.py,
+that can be used to build and install ring from source on different platforms.
+
+More documentation can be found on http://docs.ring.cx. You may also build the documentation
+with ``make docs``. The documentation will be built in ``docs/build/html``.
+
+Using make-ring
+###############
+
+Dependencies
+------------
+
+The Ring installer uses python3. Please make sure it is installed before running it.
+
+Initialize the repositories
+---------------------------
+
+.. code-block:: bash
+
+    ./make-ring.py --init
+
+On Linux
+--------
+
+1. Build and install all the dependencies:
+
+.. code-block:: bash
+
+    ./make-ring.py --dependencies
+
+Your distribution's package manager will be used.
+
+2. Build and install locally under this repository:
+
+.. code-block:: bash
+
+    ./make-ring.py --install
+
+3. Run daemon and client that were installed locally:
+
+.. code-block:: bash
+
+	./make-ring.py --run
+
+You can then stop the processes with CTRL-C.
+
+You can also run them in the background with the ``--background`` argument and then use the ``--stop`` command to stop them. Stdout and stderr go to daemon.log and client-gnome.log.
+
+Install globally for all users instead
+''''''''''''''''''''''''''''''''''''''
+
+.. code-block:: bash
+
+    ./make-ring.py --install --global-install
+
+Run global install:
+
+.. code-block:: bash
+
+    gnome-ring
+
+This already starts the daemon automatically for us.
+
+Uninstall the global install:
+
+.. code-block:: bash
+
+    ./make-ring.py --uninstall
+
+On OSX
+------
+
+You need to setup Homebrew (<http://brew.sh/>) since their is no built-in package manager on OSX.
+
+Build and install all the dependencies:
+
+.. code-block:: bash
+
+    ./make-ring.py --dependencies
+
+
+Build and install locally under this repository:
+
+.. code-block:: bash
+
+    ./make-ring.py --install
+
+Output
+''''''
+
+You can find the .app file in the ``./install/client-macosx`` folder.
+
+On Android
+----------
+
+Please make sure you have the Android SDK and NDK installed, and that their paths are properly set. For further information, please visit <https://github.com/savoirfairelinux/ring-client-android>
+
+Build and install locally under this repository:
+
+.. code-block:: bash
+
+    ./make-ring.py --install --distribution=Android
+
+Output
+''''''
+
+You can find the .apk file in the ./client-android/ring-android/app/build/outputs