adding note to docs about 3.3

Signed-off-by: Vanessa Sochat <[email protected]>

README.md

@@ -6,7 +6,7 @@ Hi Friends! Are your containers lonely? Singularity containers thrive in happine
 
 Singularity Global Client is an interface to interact with Singularity containers in many different storage locations. We are able to use modern APIs by way of providing and using the software within a Singularity container! For older architectures, we provide a [Singularity container](Singularity) for you to use instead. You can build it from this repository, or use the provided container on [Singularity Hub](https://www.singularity-hub.org/collections/379).
 
-See our [installation guide](https://singularityhub.github.io/sregistry-cli/install) to get started. For more details, please refer to our [documentation](docs)
+If used for the Singularity Registry client, Python 3 is required. See our [installation guide](https://singularityhub.github.io/sregistry-cli/install) to get started. For more details, please refer to our [documentation](docs).
 
 ## Building the RPM
 

docs/clients/registry.md

@@ -18,6 +18,7 @@ The following commands are not yet developed or implemented, but can be (please
 
  - *delete*: `[remote]`: delete an image from a remote endpoint if you have the correct credential (note this isn't implemented yet for the registry, but is noted here as a todo).
 
+If you are using `sregistry` for a Singularity Registry, Python 3.3+ is required.
 
 ## Install
 The Singularity Registry client for sregistry is recommended for use with Python 3, since it uses the datetime package to help with the credential header (if you have a workaround for this, please contribute since it causes issues for many). To install the dependencies:

setup.py

@@ -143,7 +143,6 @@ def get_reqs(lookup=None, key='INSTALL_REQUIRES'):
               'Topic :: Software Development',
               'Topic :: Scientific/Engineering',
               'Operating System :: Unix',
-              'Programming Language :: Python :: 2.7',
-              'Programming Language :: Python :: 3',
+              'Programming Language :: Python :: 3.3',
           ],
           entry_points = {'console_scripts': [ 'sregistry=sregistry.client:main' ] })