Commits on Nov 5, 2015

1. Wrap shell scripts for safety …

   Wrap the entirety of the install_salt and configure_salt shell scripts
   in a function to prevent problems if interrupted mid-download, as
   preparation to update the installation guide in the wiki to use these
   scripts via curl| sudo sh.
   
   Also make scripts portable and do a bit of cleanup.

   

   aneeshusa committed Nov 5, 2015

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