Update installation information

- List python 3 as a supported version
- Add information for installing from GitHub

README.rst

@@ -15,10 +15,16 @@ part of this package to configure and collect measurements from that DAQ.
 Installation
 ------------
 
-::
+From PyPI::
 
         sudo -H pip install daqpower
 
+The latest developement version from GitHub::
+
+    git clone [email protected]:ARM-software/daq-server.git daq-server
+    cd daq-server
+    sudo -H python setup.py install
+
 
 Usage
 -----

doc/source/index.rst

@@ -101,7 +101,7 @@ The DAQ power measurement solution is implemented in daqpower Python library,
 the package which is available for download via pip or from `Github`_.
 
   - Install NI-DAQmx driver, as described in the previous section.
-  - Install Python 2.7.
+  - Install Python 2.7 or Python3.
   - Download and install ``pip``, ``numpy`` and ``twisted`` Python packages.
     These packages have C extensions, an so you will need a native compiler set
     up if you want to install them from PyPI. As an easier alternative, you can
@@ -111,6 +111,12 @@ the package which is available for download via pip or from `Github`_.
 
         sudo -H pip install daqpower
 
+    Or alternatively install the latest development version from GitHub::
+
+        git clone [email protected]:ARM-software/daq-server.git daq-server
+        cd daq-server
+        sudo -H python setup.py install
+
 
     This should automatically download and install ``PyDAQmx`` package as well
     (the Python bindings for the NI-DAQmx driver).

setup.py

@@ -48,6 +48,7 @@
         'Operating System :: Unix',
         'Operating System :: Microsoft :: Windows',
         'Programming Language :: Python :: 2.7',
+        'Programming Language :: Python :: 3',
     ],
 )