organize README badges

* move urls to the bottom
* add PkgEval badge: JuliaImages/Images.jl#862

Author: johnnychen94

README.md

@@ -1,9 +1,22 @@
 # ImageSegmentation
 
-Julia package for multiple Image Segmentation Algorithms
+[![][travis-img]][travis-url]
+[![][pkgeval-img]][pkgeval-url]
+[![][codecov-img]][codecov-url]
+[![][docs-stable-img]][docs-stable-url]
+[![][docs-dev-img]][docs-dev-url]
 
-[![Build Status](https://travis-ci.org/JuliaImages/ImageSegmentation.jl.svg?branch=master)](https://travis-ci.org/JuliaImages/ImageSegmentation.jl)
+Julia package for multiple Image Segmentation Algorithms
 
-Read the documentation here:
+<!-- URLS -->
 
-[![](https://img.shields.io/badge/docs-latest-blue.svg)](https://juliaimages.github.io/latest)
+[pkgeval-img]: https://juliaci.github.io/NanosoldierReports/pkgeval_badges/I/ImageSegmentation.svg
+[pkgeval-url]: https://juliaci.github.io/NanosoldierReports/pkgeval_badges/report.html
+[travis-img]: https://travis-ci.org/JuliaImages/ImageSegmentation.jl.svg?branch=master
+[travis-url]: https://travis-ci.org/JuliaImages/ImageSegmentation.jl
+[codecov-img]: https://codecov.io/github/JuliaImages/ImageSegmentation.jl/coverage.svg?branch=master
+[codecov-url]: https://codecov.io/github/JuliaImages/ImageSegmentation.jl?branch=master
+[docs-stable-img]: https://img.shields.io/badge/docs-stable-blue.svg
+[docs-stable-url]: https://juliaimages.org/stable
+[docs-dev-img]: https://img.shields.io/badge/docs-dev-blue.svg
+[docs-dev-url]: https://juliaimages.org/latest/