Fixed Coverage Badge

Was stuck at 0% despite being at 8%. Added "&service=github" to the end as suggested at lemurheavy/coveralls-public#971.

README.md

@@ -3,7 +3,7 @@
 [![Build Status](https://travis-ci.com/danineamati/TrajOptSOCPs.jl.svg?branch=master)](https://travis-ci.com/github/danineamati/TrajOptSOCPs.jl)
 [![Build Status](https://ci.appveyor.com/api/projects/status/github/danineamati/TrajOptSOCPs.jl?svg=true)](https://ci.appveyor.com/project/danineamati/trajoptsocps-jl)
 [![Coverage](https://codecov.io/gh/danineamati/TrajOptSOCPs.jl/branch/master/graph/badge.svg)](https://codecov.io/gh/danineamati/TrajOptSOCPs.jl)
-[![Coverage](https://coveralls.io/repos/github/danineamati/TrajOptSOCPs.jl/badge.svg?branch=master)](https://coveralls.io/github/danineamati/TrajOptSOCPs.jl?branch=master)
+[![Coverage Status](https://coveralls.io/repos/github/danineamati/TrajOptSOCPs.jl/badge.svg?branch=master&service=github)](https://coveralls.io/github/danineamati/TrajOptSOCPs.jl?branch=master)
 [![](https://img.shields.io/badge/docs-dev-blue.svg)](https://danineamati.github.io/TrajOptSOCPs.jl/dev)
 
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