update readme

README.md

@@ -18,7 +18,7 @@ Install via
 
 or in order to install in developer mode via
 
-    python setup.py clean --all develop clean --all
+    python -m pip install --editable .
 
 ## Results
 
@@ -85,4 +85,4 @@ For the entries in `history`, the following keys are important:
 * `train_score`: score function (eg accuracy) over training set
 * `val_score`: score function (eg accuracy) over validation set
 
-In [`stepback.utils.py`](stepback/utils.py) you can find several helper functions for merging or filtering output files.
+In [`stepback.utils.py`](stepback/utils.py) you can find several helper functions for merging or filtering output files.