added docs to show wait_for default timeout settings

Fixes #400

lib/ansible/modules/utilities/logic/wait_for.py

@@ -38,15 +38,15 @@ DOCUMENTATION = '''
 module: wait_for
 short_description: Waits for a condition before continuing.
 description:
+     - You can wait for a set amount of time C(timeout), this is the default if nothing is specified.
      - Waiting for a port to become available is useful for when services
-       are not immediately available after their init scripts return - 
+       are not immediately available after their init scripts return
        which is true of certain Java application servers. It is also
        useful when starting guests with the M(virt) module and
        needing to pause until they are ready.
      - This module can also be used to wait for a regex match a string to be present in a file.
-     - In 1.6 and later, this module can 
-       also be used to wait for a file to be available or absent on the 
-       filesystem.
+     - In 1.6 and later, this module can also be used to wait for a file to be available or
+       absent on the filesystem.
      - In 1.8 and later, this module can also be used to wait for active
        connections to be closed before continuing, useful if a node
        is being rotated out of a load balancer pool.
@@ -57,7 +57,6 @@ options:
       - A resolvable hostname or IP address to wait for
     required: false
     default: "127.0.0.1"
-    aliases: []
   timeout:
     description:
       - maximum number of seconds to wait for