feat(client): add proxy support

Added proxy support via environment variables.

Author: torrick

client/deis.py

@@ -84,6 +84,10 @@ def __init__(self):
         cookie_file = os.path.expanduser('~/.deis/cookies.txt')
         cookie_dir = os.path.dirname(cookie_file)
         self.cookies = MozillaCookieJar(cookie_file)
+        self.proxies = {
+            "http": os.getenv("http_proxy"),
+            "https": os.getenv("https_proxy")
+        }
         # Create the $HOME/.deis dir if it doesn't exist
         if not os.path.isdir(cookie_dir):
             os.mkdir(cookie_dir, 0700)

docs/using_deis/install-client.rst

@@ -34,6 +34,17 @@ You can also install the latest Deis client using Python's pip_ package manager:
 
     $ deis
     Usage: deis <command> [<args>...]
+    
+Proxy Support
+-------------
+
+Set your http and/or https environment variables to enable proxy support
+
+.. code-block:: console
+
+    $ export http_proxy="http://proxyip:port"
+    $ export https_proxy="http://proxyip:port"
+    
 
 Integrated Help
 ---------------