Try to fix codecov

Author: MartinOtter

.travis.yml

@@ -35,4 +35,4 @@ after_success:
   # push coverage results to Coveralls
   # - julia -e 'cd(Pkg.dir("Modia3D")); Pkg.add("Coverage"); using Coverage; Coveralls.submit(Coveralls.process_folder())'
   # push coverage results to Codecov
-  #- julia -e 'cd(Pkg.dir("Modia3D")); Pkg.add("Coverage"); using Coverage; Codecov.submit(Codecov.process_folder())'
+  - julia -e 'using Pkg; cd(Pkg.dir("Modia3D")); Pkg.add("Coverage"); using Coverage; Codecov.submit(Codecov.process_folder())'

README.md

@@ -2,6 +2,7 @@
 
 [![Travis](https://travis-ci.org/ModiaSim/Modia3D.jl.svg?branch=master)](https://travis-ci.org/ModiaSim/Modia3D.jl)
 [![AppVoyer](https://ci.appveyor.com/api/projects/status/github/ModiaSim/Modia3D.jl?svg=true)](https://ci.appveyor.com/project/MartinOtter/modia3d-jl)
+[![codecov.io](http://codecov.io/github/ModiaSim/Modia3D.jl/coverage.svg?branch=master)](http://codecov.io/github/ModiaSim/Modia3D.jl?branch=master)
 [![Stable](https://img.shields.io/badge/docs-stable-blue.svg)](https://ModiaSim.github.io/Modia3D.jl/stable)
 [![Latest](https://img.shields.io/badge/docs-latest-blue.svg)](https://ModiaSim.github.io/Modia3D.jl/latest)
 [![The MIT License](https://img.shields.io/badge/license-MIT-brightgreen.svg?style=flat-square)](https://github.com/ModiaSim/Modia3D.jl/blob/master/LICENSE.md)