Libdoc updates - link to project and fix 404 (robotframework#668)

* Fix 404 due to RF migration to Github * Link to project page * Format corrections per PR comments * fix pronoun usage

Author: ombre42

docs/Selenium2Library.html

@@ -20,8 +20,12 @@ class Selenium2Library(
  _AlertKeywords
 ):
  """Selenium2Library is a web testing library for Robot Framework.
+ 
+ This document is about using Selenium2Library. For information about
+ installation, support, and more please visit the
+ [https://github.com/robotframework/Selenium2Library|project page].
 
- It uses the Selenium 2 (WebDriver) libraries internally to control a web browser.
+ Selenium2Library uses the Selenium 2 (WebDriver) libraries internally to control a web browser.
  See http://seleniumhq.org/docs/03_webdriver.html for more information on Selenium 2
  and WebDriver.
 
@@ -130,8 +134,8 @@ class Selenium2Library(
 
  All timeouts can be given as numbers considered seconds (e.g. 0.5 or 42)
  or in Robot Framework's time syntax (e.g. '1.5 seconds' or '1 min 30 s').
- For more information about the time syntax see:
- http://robotframework.googlecode.com/svn/trunk/doc/userguide/RobotFrameworkUserGuide.html#time-format.
+ For more information about the time syntax see the
+ [http://robotframework.org/robotframework/latest/RobotFrameworkUserGuide.html#time-format|Robot Framework User Guide].
  """
 
  ROBOT_LIBRARY_SCOPE = 'GLOBAL'