add deprecated

Author: jlwalke2

README.md

@@ -39,6 +39,7 @@ sasctl requires the following Python packages be installed.
 If not already present, these packages will be downloaded and installed automatically.  
 - requests
 - six
+- deprecated
 
 The following additional packages are recommended for full functionality:
 - swat

setup.py

@@ -44,7 +44,8 @@ def get_file(filename):
     python_requires='>=2.7',
     install_requires=[
         'requests',
-        'six >= 1.11'
+        'six >= 1.11',
+        'deprecated'
     ],
     extras_require = {
         'swat': ['swat'],

tox.ini

@@ -57,6 +57,7 @@ deps =
     flake8: flake8==3.7.7
     codecov: codecov >= 1.4.0
     doc: sphinx == 1.8
+    doc: deprecated == 1.2.6
 
 setenv =
     tests: SASCTL_USER_NAME=dummy