minor: add doc

SVN: 7882

openbis/source/bash/sprint_install.sh

 #!/bin/bash
+# Performs the sprint components installation.
 # This script assumes that you already are on the sprint server and must be run from that place
 # in the home directory.
 

openbis/source/bash/tag_and_build.sh

 #!/bin/bash
+# Tags, builds the software components, uploads them to sprint server 
+# and places a copy of them on the sprint server ready for installation. 
+#
 # This script assumes that you have a SSH access on 'sprint-openbis.ethz.ch' 
 # and 'cisd-vesuvio.ethz.ch'. This is typically configured in the SSH config file.