Merging changes from Git for 1.0 release

git-svn-id: https://plugins.svn.wordpress.org/taskfreak/trunk@788015 b8457f37-d9ea-0310-8a92-e5e31aec5664
Added screenshots. Enhanced installation section.

git-svn-id: https://plugins.svn.wordpress.org/taskfreak/trunk@789662 b8457f37-d9ea-0310-8a92-e5e31aec5664
Version 1.0.1

git-svn-id: https://plugins.svn.wordpress.org/taskfreak/trunk@789673 b8457f37-d9ea-0310-8a92-e5e31aec5664
Added link to the video.

git-svn-id: https://plugins.svn.wordpress.org/taskfreak/trunk@791366 b8457f37-d9ea-0310-8a92-e5e31aec5664