fix doc and REAMDE

Change-Id: I2e022e29e52511ca1a7f529d6d1bae44a995a073

README.md

@@ -3,6 +3,8 @@
 current running code at SINQ, with newest changes not yet pushed
 through the Gerrit workflow at MLZ
 
+## Branches
+
 branches:
 
 - mlz: master from forge.frm2.tum.de:29418/sine2020/secop/playground
@@ -39,3 +41,17 @@ changes are done, eventually a sync step should happen:
 6) in wip: cherry-pick commits not yet feeded into Gerrit from copy in step (1)
 7) decide from where to take new work branch (probably from wip)
 8) delete branch copies not needed any more
+
+
+## Procedure to update PPMS
+
+1) git checkout wip (or work, whatever state to copy to ppms)
+2) git checkout -B ppms   # local branch ?
+3) assume PPMSData is mounted on /Volumes/PPMSData
+
+   cp -r secop_psi /Volumes/PPMSData/zolliker/frappy/secop_psi
+   cp -r secop /Volumes/PPMSData/zolliker/frappy/secop
+
+   it may be that additional folder have to copied ...
+
+