Update commands to indicate which need the API key

vultron/cmd.py

@@ -35,12 +35,12 @@ class Command:
   def __init__(self, prog, api_key, out):
     self.prog = prog
     self.out = out
-    self.uses_api = True
+    self.needs_api_key = True
     self.default = "help"
 
     self.init()
 
-    if self.uses_api and api_key is None:
+    if self.needs_api_key and api_key is None:
       raise NoApiKey()
 
     self.api = vultron.api.Client(api_key)
@@ -55,6 +55,8 @@ class Command:
 
     data = fn(*args)
 
+    # FIXME: Let functions choose the output format. This will allow help
+    # functions to still return a rendering.
     if data is not None:
       display = vultron.display.FORMATS[self.out](data)
       print(display.render())

vultron/cmds/help.py

@@ -3,7 +3,7 @@ import vultron.display
 
 class Help(vultron.cmd.Command):
   def init(self):
-    self.uses_api = False
+    self.needs_api_key = False
 
   def vultron_help(self):
     print("stub help message here")

vultron/cmds/region.py

@@ -4,6 +4,9 @@ import vultron.display
 class Region(vultron.cmd.Command):
   """Query for information on Vultr regions."""
 
+  def init(self):
+    self.needs_api_key = False
+
   def vultron_list(self):
     """Display all available regions."""