Fix a bug that emoticon of <3 and >:) cannot display correctly in the message.
Revert "Fix a bug that emoticon of <3 and >:) cannot display correctly in the message."

This reverts commit f7e7d1a65882fcefad2d84cb230ebae0b03a29f2.
Fix a bug that emoticon of '<3' and '>:)' cannot be displayed correctly in the message
Fix format
Update readme
Merge branch 'master' of https://github.com/derek-wangpch/converse.js into derek-wangpch-master
Merge branch 'derek-wangpch-master'