Documentation updates

Author: aaltat

src/SeleniumLibrary/keywords/cookie.py

@@ -70,6 +70,8 @@ def get_cookie(self, name):
  | full_info | All the above attributes joined as string |
 
  If no cookie is found with ``name``, this keyword fails.
+
+ New in SeleniumLibrary 3.0
  """
  cookie = self.browser.get_cookie(name)
  if cookie:
@@ -87,8 +89,16 @@ def add_cookie(self, name, value, path=None, domain=None, secure=None,
 
  ``name`` and ``value`` are required, ``path``, ``domain``, ``secure``
  and ``expiry`` are optional. Expiry supports the same formats as
- the DateTime library and is converted to EPOCH which is supported
- by the Selenium.
+ the [http://robotframework.org/robotframework/latest/libraries/DateTime.html|DateTime]
+ library and is converted to EPOCH timestamp which is supported by the
+ Selenium.
+
+ Prior SeleniumLibry 3.0 setting the expiry did not work.
+
+ Example:
+ | Add Cookie | foo | bar | | # Adds cookie with name foo and value bar |
+ | Add Cookie | foo | bar | domain=example.com | # Adds cookie with example.com domain defined |
+ | Add Cookie | foo | bar | expiry=2027-09-28 16:21:35 | # Adds cookie with expiry time defined |
  """
  new_cookie = {'name': name, 'value': value}
  if is_truthy(path):