Removed a lot of the out-of-date instructions

main.tex

@@ -100,11 +100,11 @@
   When binding a book, the edges that face outward need to be very smooth to reduce contamination and dust from entering the book when it sits on a shelf; this is why traditionally a larger paper size is cut down to the book size.
   If your print house expects the stock to be A4, then make sure the rubook has the ``a4paper'' option.
   If they prefer to deal with preparation themselves from a B5 pdf, then the default ``b5paper'' option is correct.
-  The template is optimized for lualatex, but should still work with pdflatex.
+  The template is designed to work with lualatex.
   
   The abstract goes here in English or Icelandic.
   It should be a fairly short summary of the entire document.
-  If you switch to Icelandic mode (IS option to ruthesis) then abstract will become \'{U}tdr\'{a}ttur
+  If you switch to Icelandic mode then abstract will become \'{U}tdr\'{a}ttur
 
   Keywords / Efnisord:  Keywords, separated, by, commas
 \end{abstract}