Updating python2.7 details

Author: kashishm

docs/source/installation.rst

@@ -11,7 +11,7 @@ Installation
        $ gauge -v
 
 .. note::
-   ``getgauge`` package only supports ``python3.*``.
+   ``getgauge`` package supports ``python2.7`` and ``python3.*``.
 
 
 Online Installation

setup.py

@@ -13,6 +13,7 @@
     classifiers=[
         'Development Status :: 3 - Alpha',
         'License :: OSI Approved :: MIT License',
+        'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
         'Programming Language :: Python :: 3.1',
         'Programming Language :: Python :: 3.2',