update Readme badges and remove travis-ci information

Signed-off-by: Mohit Suman <[email protected]>

Author: mohitsuman

README.md

@@ -1,8 +1,11 @@
 Language support for Java ™ for Visual Studio Code
 =====================
 
-[![Join the chat at https://gitter.im/redhat-developer/vscode-java](https://badges.gitter.im/redhat-developer/vscode-java.svg)](https://gitter.im/redhat-developer/vscode-java?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
-[![Build Status](https://travis-ci.org/redhat-developer/vscode-java.svg?branch=master)](https://travis-ci.org/redhat-developer/vscode-java) [![Marketplace Version](https://vsmarketplacebadge.apphb.com/version/redhat.java.svg "Current Release")](https://marketplace.visualstudio.com/items?itemName=redhat.java)
+[![Visual Studio Marketplace](https://img.shields.io/visual-studio-marketplace/v/redhat.java?style=for-the-badge&label=VS%20Marketplace&logo=visual-studio-code)](https://marketplace.visualstudio.com/items?itemName=redhat.java)
+[![Installs](https://img.shields.io/visual-studio-marketplace/i/redhat.java?style=for-the-badge)](https://marketplace.visualstudio.com/items?itemName=redhat.java)
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 Provides Java ™ language support via
 [Eclipse ™ JDT Language Server](https://github.com/eclipse/eclipse.jdt.ls), which utilizes