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README.md

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 [![Build Status](https://travis-ci.org/vatlab/sos-notebook.svg?branch=master)](https://travis-ci.org/vatlab/sos-notebook)
 [![Build status](https://ci.appveyor.com/api/projects/status/nkyw7f4o97u7jl1l/branch/master?svg=true)](https://ci.appveyor.com/project/BoPeng/sos-notebook/branch/master)
 [![Codacy Badge](https://api.codacy.com/project/badge/Grade/9b2c7f4e9d93434b8e5a33f7f91b8172)](https://www.codacy.com/app/BoPeng/sos-notebook?utm_source=github.com&utm_medium=referral&utm_content=vatlab/sos-notebook&utm_campaign=Badge_Grade)
-[![Coverage Status](https://coveralls.io/repos/github/vatlab/sos-notebook/badge.svg)](https://coveralls.io/github/vatlab/sos-notebook)
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 # sos-notebook
 SoS Notebook. Please refer to [SoS Homepage](http://vatlab.github.io/SoS/) for details.