Update setup.py

Update setup to obtain version from github version

setup.py

@@ -1,12 +1,27 @@
 #!/usr/bin/env python
 
 from distutils.core import setup
+import subprocess
+
+def _get_version_hash():
+  """Talk to git and find out the tag/hash of our latest commit"""
+  try:
+        p = subprocess.Popen(["git", "describe",
+                              "--tags", "--dirty", "--always"],
+                             stdout=subprocess.PIPE)
+    except EnvironmentError:
+        print("Couldn't run git to get a version number for setup.py")
+        return
+    ver = p.communicate()[0]
+    return ver.strip()
+
 setup(name='pymust',
       version='0.1.2',
       description='Python port of the MUST toolbox for ultrasound signal processing and generation of simulated images.',
       author='Gabriel Bernardino (Python port), Damien Garcia (original matlab code)',
       author_email='[email protected]',
       url='https://www.biomecardio.com/en//',
+      version=_get_version_hash(),
       packages=['pymust'],
       license = 'GNU Lesser General Public License v3.0 (LGPL v3)',
       package_dir={'':'src'}