Update README.md

Author: pancetta

README.md

@@ -19,8 +19,8 @@ implemented.
 
 -   Variants of SDC: explicit, implicit, IMEX, multi-implicit, Verlet,
     multi-level, diagonal, multi-step
--   Variants of PFASST: virtual parallel or MPI-based parallel,
-    classical of multigrid perspective
+-   Variants of PFASST: virtually parallel or MPI-based parallel,
+    classical or multigrid perspective
 -   8 tutorials: from setting up a first collocation problem to SDC,
     PFASST and advanced topics
 -   Projects: many documented projects with defined and tested outcomes
@@ -43,12 +43,12 @@ The code is hosted on GitHub, see
 will give you a core version of `pySDC` to work with,
 working with the developer version is most often the better choice. We
 thus recommend to checkout the code from GitHub and install the
-dependencies e.g. by using a [conda](https://conda.io/en/latest/)
-environment. For this, `pySDC` ships with environment files
+dependencies e.g. by using [micromamba](https://mamba.readthedocs.io/en/latest/user_guide/micromamba.html). 
+For this, `pySDC` ships with environment files
 which can be found in the folder `etc/`. Use these as e.g.
 
 ``` bash
-conda env create -f etc/environment-base.yml
+micromamba create -f etc/environment-base.yml
 ```
 
 If you want to install the developer version using `pip` directly from the GitHub repository, use this: