Update readme

README.md

-# Data analysis repo
+# Data analysis utils
 
-This repository is a collection of data analysis repos for various shifts and contains the common code for reading and evaluating data.
+This repository is a collection of data analysis utils for reading and evaluating data.
 
 ## Usage
 
-### Clone
+Add it as submodule to you data analysis repository
 ```
-git clone git@git.gsi.de:p.niedermayer/data-analysis.git
-cd data-analysis
+git submodule add git@git.gsi.de:p.niedermayer/data-analysis.git analysis_utils
+cd analysis_utils
 git submodule init
-git -c http.sslVerify=false submodule update common/bdiolib
+git -c http.sslVerify=false submodule update bdiolib
 ```
-Then, for every data analysis submodule (folder name xxxx) of interest
-```
-git submodule update xxxx
-```
-
 
 
 
-### Add new data analysis repo
 
-- Create git repo
-- Add a README to it and initial commit
-- Add submodule locally
-  ```
-  git submodule add git@git.gsi.de:p.niedermayer/data-analysis-xxxx.git xxxx
-  git commit -m "Added submodule xxxx"
-  ```