Begin updates to README. Also, introduce a version attribute in the config file …

…and use that, as well as the environment, to name resources.  Also use this name for the zip file and eliminate zipfile_name from config.

@@ -42,8 +42,11 @@ Kappa is a command line tool.  The basic command format is:
 
 Where ``command`` is one of:
 
-* create - creates the IAM policy (if necessary), the IAM role, and zips and
-  uploads the Lambda function code to the Lambda service
+* deploy - does whatever is required to deploy the current version of your
+  Lambda function such as creating/updating policies and roles and creating or
+  updating the function itself
+* delete - delete the Lambda function, remove any event sources, delete the IAM
+  policy and role
 * invoke - make a synchronous call to your Lambda function, passing test data
   and display the resulting log data
 * invoke_async - make an asynchronous call to your Lambda function passing test
@@ -53,9 +56,6 @@ Where ``command`` is one of:
 * tail - display the most recent log events for the function (remember that it
   can take several minutes before log events are available from CloudWatch)
 * add_event_sources - hook up an event source to your Lambda function
-* delete - delete the Lambda function, remove any event sources, delete the IAM
-  policy and role
-* update_code - Upload new code for your Lambda function
 * update_event_sources - Update the event sources based on the information in
   your kappa config file
 * status - display summary information about functions, stacks, and event
@@ -76,9 +76,9 @@ The basic workflow is:
 * Create any custom IAM policy you need to execute your Lambda function
 * Create some sample data
 * Create the YAML config file with all of the information
-* Run ``kappa <path-to-config> create`` to create roles and upload function
-* Run ``kappa <path-to-config> invoke`` to invoke the function with test data
-* Run ``kappa <path-to-config> update_code`` to upload new code for your Lambda
+* Run ``kappa <path-to-config> deploy`` to create roles and upload function
+* Run ``kappa <path-to-config> test`` to invoke the function with test data
+* Run ``kappa <path-to-config> deploy`` to upload new code for your Lambda
   function
 * Run ``kappa <path-to-config> add_event_sources`` to hook your function up to the event source
 * Run ``kappa <path-to-config> tail`` to see more output

@@ -66,7 +66,17 @@ class Context(object):
 
     @property
     def name(self):
-        return self.config.get('name', None)
+        return '{}-{}-v{}'.format(self.base_name,
+                                 self.environment,
+                                 self.version)
+
+    @property
+    def base_name(self):
+        return self.config.get('base_name')
+
+    @property
+    def version(self):
+        return self.config.get('version')
 
     @property
     def profile(self):
@@ -78,11 +88,11 @@ class Context(object):
 
     @property
     def record_path(self):
-        return self.config.get('record_path', None)
+        return self.config.get('record_path')
 
     @property
     def lambda_config(self):
-        return self.config.get('lambda', None)
+        return self.config.get('lambda')
 
     @property
     def exec_role_arn(self):

@@ -62,7 +62,7 @@ class Function(object):
 
     @property
     def zipfile_name(self):
-        return self._config['zipfile_name']
+        return '{}.zip'.format(self._context.name)
 
     @property
     def path(self):

@@ -35,7 +35,7 @@ class Policy(object):
 
     @property
     def name(self):
-        return '{}-{}-policy'.format(self._context.name, self.environment)
+        return self._context.name
 
     @property
     def description(self):

@@ -45,8 +45,7 @@ class Role(object):
 
     @property
     def name(self):
-        return '{}-{}-role'.format(
-            self._context.name, self._context.environment)
+        return self._context.name
 
     @property
     def arn(self):