add badges

README.md

+[![pipeline status](https://gitlab.paca.inrae.fr/r-ecosystem/windowsr/badges/master/pipeline.svg)](https://gitlab.paca.inrae.fr/r-ecosystem/windowsr/-/commits/master)
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+Original repository : [https://gitlab.paca.inrae.fr/r-ecosystem/windowsr/](https://gitlab.paca.inrae.fr/r-ecosystem/windowsr/)  
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 # Windows 10 Virtual Machine, R environment, as GitLab Runner
 
 If you want to develop, tests and check your R packages, build R packages binaries under/for Windows automatically, this is the right place.