Update README.

README.md

@@ -3,17 +3,16 @@
 
 *Common Interface for Electromagnetic Fields*
 
-[![Documentation](https://img.shields.io/badge/docs-stable-blue.svg)](https://juliaplasma.github.io/ElectromagneticFields.jl/stable/)
-[![Documentation](https://img.shields.io/badge/docs-latest-blue.svg)](https://juliaplasma.github.io/ElectromagneticFields.jl/latest/)
+[![Stable](https://img.shields.io/badge/docs-stable-blue.svg)](https://juliaplasma.github.io/ElectromagneticFields.jl/stable/)
+[![Latest](https://img.shields.io/badge/docs-latest-blue.svg)](https://juliaplasma.github.io/ElectromagneticFields.jl/latest/)
 [![License](https://img.shields.io/badge/license-MIT-blue.svg)](LICENSE.md)
 [![PkgEval Status](https://juliaci.github.io/NanosoldierReports/pkgeval_badges/E/ElectromagneticFields.svg)](https://juliaci.github.io/NanosoldierReports/pkgeval_badges/E/ElectromagneticFields.html)
-![CI](https://github.com/JuliaPlasma/ElectromagneticFields.jl/workflows/CI/badge.svg)
-[![codecov](https://codecov.io/gh/JuliaPlasma/ElectromagneticFields.jl/branch/master/graph/badge.svg)](https://codecov.io/gh/JuliaPlasma/ElectromagneticFields.jl)
+[![CI](https://github.com/JuliaPlasma/ElectromagneticFields.jl/workflows/CI/badge.svg)](https://github.com/JuliaPlasma/ElectromagneticFields.jl/actions?query=workflow:CI)
+[![Coverage](https://codecov.io/gh/JuliaPlasma/ElectromagneticFields.jl/graph/badge.svg?token=shiEHXD1rj)](https://codecov.io/gh/JuliaPlasma/ElectromagneticFields.jl)
 [![DOI](https://zenodo.org/badge/doi/10.5281/zenodo.3662494.svg)](https://doi.org/10.5281/zenodo.3662494)
 
-ElectromagneticFields.jl provides a common interface for evaluating analytical and numerical magnetic equilibria, general electromagnetic fields and in the future also simple Maxwell solvers.
-For analytical equilibria, it generates Julia code providing high-level evaluation routines. Numerical equilibria
-are interpolated using ApproXD and can be evaluated with the very same interface as the analytical equilibria.
+ElectromagneticFields.jl provides a collection of analytical magnetic equilibria and electromagnetic fields.
+It generates Julia code providing high-level evaluation routines.
 
 
 ## Features
@@ -26,22 +25,9 @@ Analytical equilibria:
 - Arnold-Beltrami-Childress (ABC) field
 - 3D perturbations (e.g., magnetic islands, electric fields)
 
-Numerical equilibria (planned):
-- projected analytic equilibria
-- EFIT
-- VMEC
-
-Numerical solvers (planned):
-- B-Spline, FEM and pseudo-spectral Poisson, Ampère and Faraday solvers
-
 
 ## References
 
 - Antoine J. Cerfon, Jeffrey P. Freidberg. "One size fits all" analytic solutions to the Grad–Shafranov equation. [Physics of Plasmas 17, 032502, 2010](https://doi.org/10.1063/1.3328818).
 - Patrick J. McCarthy. Analytical solutions to the Grad–Shafranov equation for tokamak equilibrium with dissimilar source functions. [Physics of Plasmas 6, 3554, 1999](https://doi.org/10.1063/1.873630).
 - Yanyan Shi, Yajuan Sun, Yulei Wang, Jian Liu, Study of adaptive symplectic methods for simulating charged particle dynamics, [Journal of Computational Dynamics 6, 429-448, 2019](http://dx.doi.org/10.3934/jcd.2019022).
-
-
-## License
-
-The ElectromagneticFields.jl package is licensed under the [MIT "Expat" License](LICENSE.md).