added buttons for each version release

added changelog link for v1.1 and v1.0

added  buttons to other releases for whats new 1.2 page

updated buttons to links

created whats new page for version 1.0

created whats new page for version 1.1

header link typo

button links directly to 1.0 and 1.1 version in the changelog

added partials

moved partial to correct directory

renamed partial filename
Merge pull request #71 from joyicecloud/whats-new-link

add buttons for each version release