Revert "update readme"

This reverts commit 930e65e58c0fb674f4586a7b964912080b8a0a1b.
1. Fix the memory leak issue; 2. Fix the IMS coredump issue when switching master-slave acd servers;  3. Fix the issue that all three partys hangup when the quality inspection party quit from insertion
Merge branch 'master' of https://github.com/Baidu-ecom/CC