Added Gitter badge

Author: gitter-badger

README.md

@@ -1,5 +1,7 @@
 linux shell
 =====
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+[![Join the chat at https://gitter.im/oscm/shell](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/oscm/shell?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
 This is a group of installation script, it can achieve fast initialization of your server.
 
 Install