Update README.md, include mention to version 2.0 and development version on master branch.
|# ALF (Algorithms for Lattice Fermions) #|
|# ALF (Algorithms for Lattice Fermions) 1.0 #|
|ALF 2.0 has benn [released](https://git.physik.uni-wuerzburg.de/ALF/ALF/-/tree/ALF-2.0). Check also the development version at the [main branch](https://git.physik.uni-wuerzburg.de/ALF/ALF).|
|## General information ##|
|This version of the **A**lgorithms for **L**attice **F**ermions package provides a general code for the finite temperature auxiliary field Quantum Monte Carlo algorithm. The code is engineered to be able simulate any model that can be written in terms of sums of single body operators, of squares of single body operators and single body operators coupled to an Ising field with given dynamics. We provide predefined types that allow the user to specify the model, the Bravais lattice as well as equal time and time displaced observables. The code supports an MPI implementation. Examples such as the Hubbard model on the Honeycomb lattice as well as the Hubbard model on the square lattice coupled to a transverse Ising field are provided and discussed in the [documentation](https://git.physik.uni-wuerzburg.de/ALF/ALF_code/blob/master/Documentation/ALF_v1.0.pdf). For questions and issues you can reach us at [firstname.lastname@example.org](mailto:email@example.com).|