Merge pull request #350 from glimchb/doc

doc: update installation doc

Author: dwsuse

doc/installation.rst

@@ -1,19 +1,47 @@
 Installation
 ============
 
+Debian / Ubuntu:
+--------------
+
+.. code-block:: sh
+
+    $ apt-get install libnvme
+
+Fedora / Red Hat:
+--------------
+
+.. code-block:: sh
+
+    $ dnf install libnvme
+
 Python Version
 --------------
 
-tbd
+The latest Python 3 version is always recommended, since it has all the latest bells and
+whistles. libnvme supports Python 3.6 and above.
 
 Dependencies
 ------------
 
-tbd
+libnvme only uses packages from the standard library,
+so no additional dependencies will be installed when installing libnvme.
 
-Install libnvme
+Install libnvme python
 -------------
 
+Debian / Ubuntu:
+
+.. code-block:: sh
+
+    $ apt-get install python3-libnvme
+
+Fedora / Red Hat:
+
+.. code-block:: sh
+
+    $ dnf install python3-libnvme
+
 libnvme is available on `PyPI`_, and can be installed using pip. The version on PyPI is
 always the latest stable release.