tAdd DOI badge from Zenodo to README - Granular.jl - Julia package for granular dynamics simulation
 (HTM) git clone git://src.adamsgaard.dk/Granular.jl
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 (DIR) README
 (DIR) LICENSE
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 (DIR) commit 7f3408a7f14a4b7cc5ddbf3832eb9a60f9f27cd9
 (DIR) parent 8c8687fd0b5c8b9bd37318ca8b64fa401b3a5e91
 (HTM) Author: Anders Damsgaard <andersd@riseup.net>
       Date:   Fri, 16 Mar 2018 14:16:51 -0400
       
       Add DOI badge from Zenodo to README
       
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         M README.md                           |       7 ++++---
       
       1 file changed, 4 insertions(+), 3 deletions(-)
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 (DIR) diff --git a/README.md b/README.md
       t@@ -4,9 +4,10 @@
        
        A [Julia](https://julialang.org) package for granular mechanics.
        
       -| Documentation | Chat | Stable Release | Development Version | Test Coverage |
       -|:-------------:|:----:|:--------------:|:-------------------:|:-------------:|
       -|[![Granular.jl Documentation](https://img.shields.io/badge/docs-stable-blue.svg)](https://anders-dc.github.io/Granular.jl/stable) [![Granular.jl Documentation](https://img.shields.io/badge/docs-latest-blue.svg)](https://anders-dc.github.io/Granular.jl/latest) | [![Chat at https://gitter.im/anders-dc/Granular.jl](https://badges.gitter.im/anders-dc/Granular.jl.svg)](https://gitter.im/anders-dc/Granular.jl?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) | [![Granular](http://pkg.julialang.org/badges/Granular_0.6.svg)](http://pkg.julialang.org/detail/Granular) | [![Build Status](https://travis-ci.org/anders-dc/Granular.jl.svg?branch=master)](https://travis-ci.org/anders-dc/Granular.jl) [![Build Status](https://ci.appveyor.com/api/projects/status/github/anders-dc/Granular.jl?svg=true)](https://ci.appveyor.com/project/anders-dc/seaice-jl/) | [![codecov.io](http://codecov.io/github/anders-dc/Granular.jl/coverage.svg?branch=master)](http://codecov.io/github/anders-dc/Granular.jl?branch=master) |
       +| DOI | Documentation | Chat | Stable Release | Development Version | Test 
       +Coverage |
       +|:---:|:-------------:|:----:|:--------------:|:-------------------:|:-------------:|
       +|[![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.1165989.svg)](https://doi.org/10.5281/zenodo.1165989)|[![Granular.jl Documentation](https://img.shields.io/badge/docs-stable-blue.svg)](https://anders-dc.github.io/Granular.jl/stable) [![Granular.jl Documentation](https://img.shields.io/badge/docs-latest-blue.svg)](https://anders-dc.github.io/Granular.jl/latest) | [![Chat at https://gitter.im/anders-dc/Granular.jl](https://badges.gitter.im/anders-dc/Granular.jl.svg)](https://gitter.im/anders-dc/Granular.jl?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) | [![Granular](http://pkg.julialang.org/badges/Granular_0.6.svg)](http://pkg.julialang.org/detail/Granular) | [![Build Status](https://travis-ci.org/anders-dc/Granular.jl.svg?branch=master)](https://travis-ci.org/anders-dc/Granular.jl) [![Build Status](https://ci.appveyor.com/api/projects/status/github/anders-dc/Granular.jl?svg=true)](https://ci.appveyor.com/project/anders-dc/seaice-jl/) | [![codecov.io](http://codecov.io/github/anders-dc/Granular.jl/coverage.svg?branch=master)](http://codecov.io/github/anders-dc/Granular.jl?branch=master) |
        
        ## Installation
        [Granular.jl](https://github.com/anders-dc/Granular.jl) is registered in the