Re-committing the readme.txt file as the change log is not reflected.

git-svn-id: https://plugins.svn.wordpress.org/fetch-tweets/trunk@807451 b8457f37-d9ea-0310-8a92-e5e31aec5664
Removed colons in the newest entries of the change log.

git-svn-id: https://plugins.svn.wordpress.org/fetch-tweets/trunk@807452 b8457f37-d9ea-0310-8a92-e5e31aec5664