improving README and setup after seeing repeating misunderstandings from newcomers

README.md

@@ -13,12 +13,15 @@ The `Campaigns` subgroup contains actual repos corresponding to different analys
 
 ## Installation
 
-### From scratch with the default installer
+In the following, we provide two alternative methods to install the framework.
+
+### Method #1: From scratch with the default installer
 
 In general, it is recommended that you install the software on a fast disk to ensure fast compilation (e.g. AFS), but that you process the heavy n-tuples on a dedicated area (e.g. NFS at DESY, EOS at CERN). Keeping the software neat and clean is important for reproducibility.
 
 1. Clone the `Installer` in a directory (we propose `DasAnalysisSystem`). Then source the minimal environment for CMSSW, CRAB, and RUCIO from that directory:
 ```
+git clone https://gitlab.cern.ch/cms-analysis/general/DasAnalysisSystem/gitlab-profile.git DasAnalysisSystem
 cd DasAnalysisSystem
 source ./setup
 ```
@@ -33,9 +36,9 @@ It is currently working at CERN (CH), at DESY (DE), at IIHE (BE), and for GitLab
 cmsenv
 scram b -j$(nproc)
 ```
-4. After a few minutes, you're all set. You may have to rerun `cmsenv` to actually see the commands in the shell.
+4. After a few minutes, you get back to the prompt. You have to rerun `cmsenv` to actually see the commands in the shell. Then you're all set.
 
-### By hand, step by step
+### Method #2: By hand, step by step
 
 In the following, we explain the installation of the framework step by step. A few packages external to CMSSW are necessary (e.g. TUnfold), which you will need to tell CMSSW how to find them with `scram setup`.
 

setup

 case "$(hostname)" in
     *desy.de)
         tput setaf 2
-        echo "Environment set up for DESY."
+        echo "Setting up environment for DESY (naf)."
         tput op
         module use -a /afs/desy.de/group/cms/modulefiles/
         module load cmssw
@@ -9,17 +9,17 @@ case "$(hostname)" in
         ;;
     *cern.ch)
         tput setaf 2
-        echo "Nothing to be done on lxplus. You may proceed safely."
+        echo "Setting up environment for CERN (lxplus)."
         tput op
         ;;
     *iihe.ac.be)
         tput setaf 2
-        echo "Environment set up for IIHE T2B cluster."
+        echo "Setting up environment for IIHE T2B cluster."
         tput op
         ;;
     *)
         tput setaf 3
-        echo "Nothing planned for this environment. Proceed at your own risks."
+        echo "Unknown facility. Proceed at your own risks."
         tput op
         ;;
 esac