Fixed setup.py for python version and to include datafiles.

setup.py

@@ -47,6 +47,8 @@
 
         # Specify the Python versions you support here. In particular, ensure
         # that you indicate whether you support Python 2, Python 3 or both.
+        'Programming Language :: Python :: 2',
+        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
@@ -60,12 +62,15 @@
     # You can just specify the packages manually here if your project is
     # simple. Or you can use find_packages().
     packages=find_packages(),
+
+    # Include additional files
+    include_package_data=True,
 
     # List run-time dependencies here.  These will be installed by pip when
     # your project is installed. For an analysis of "install_requires" vs pip's
     # requirements files see:
     # https://packaging.python.org/en/latest/requirements.html
     install_requires=['netCDF4','numpy'],
 
-    python_requires='>=3.4',
+    python_requires='>=2.7',
 )