use setuptools instead of distutils for installation

coinbase/CoinbaseRPC.py

@@ -66,7 +66,7 @@ def request(self, method, url, params=None):
 
             headers['ACCESS_KEY'] = auth['api_key']
             headers['ACCESS_SIGNATURE'] = signature
-            headers['ACCESS_NONCE'] = self.__nonce
+            headers['ACCESS_NONCE'] = str(self.__nonce)
             headers['Accept'] = 'application/json'
         else:
             raise CoinbaseAPIException('Invalid authentication mechanism')

setup.py

@@ -1,6 +1,6 @@
 # ----- Imports ---------------------------------------------------------------
 
-from distutils.core import setup
+from setuptools import setup
 
 # ----- Instructions ----------------------------------------------------------
 
@@ -22,5 +22,6 @@
         'Operating System :: OS Independent',
         'Programming Language :: Python :: 3',
         'Topic :: Software Development :: Libraries :: Python Modules',
-    ]
+    ],
+    install_requires = ["requests"]
 )