server_cacert -> ca_cert

README.md

@@ -368,7 +368,7 @@ client = docker.Client(base_url='<https_url>', tls=tls_config)
 * Authenticate server based on given CA
 
 ```python
-tls_config = docker.tls.TLSConfig(server_cacert='/path/to/ca.pem')
+tls_config = docker.tls.TLSConfig(ca_cert='/path/to/ca.pem')
 client = docker.Client(base_url='<https_url>', tls=tls_config)
 ```
 
@@ -393,7 +393,7 @@ Equivalent CLI options:
 ```python
 tls_config = docker.tls.TLSConfig(
   client_cert=('/path/to/client-cert.pem', '/path/to/client-key.pem'),
-  server_cacert='/path/to/ca.pem'
+  ca_cert='/path/to/ca.pem'
 )
 client = docker.Client(base_url='<https_url>', tls=tls_config)
 ```

docker/tls.py

@@ -9,7 +9,7 @@ class TLSConfig(object):
     verify = None
     ssl_version = None
 
-    def __init__(self, client_cert=None, server_cacert=None, verify=None,
+    def __init__(self, client_cert=None, ca_cert=None, verify=None,
                  ssl_version=None):
         # Argument compatibility/mapping with
         # http://docs.docker.com/examples/https/
@@ -45,15 +45,15 @@ class TLSConfig(object):
         # Either set verify to True (public/default CA checks) or to the
         # path of a CA Cert file.
         if verify is not None:
-            if not server_cacert:
+            if not ca_cert:
                 self.verify = verify
-            elif os.path.isfile(server_cacert):
+            elif os.path.isfile(ca_cert):
                 if not verify:
                     raise errors.TLSParameterError(
                         'verify can not be False when a CA cert is'
                         ' provided.'
                     )
-                self.verify = server_cacert
+                self.verify = ca_cert
             else:
                 raise errors.TLSParameterError(
                     'Invalid CA certificate provided for `tls_ca_cert`.'