Changed debug gfx, cleanup gitignore, write up some notes in pdfpc format

.gitignore

@@ -1,25 +1,8 @@
-*.acn
-*.acr
-*.alg
 *.aux
-*.bbl
-*.blg
-*.dvi
-*.glg
-*.glo
-*.gls
-*.idx
-*.ilg
-*.ind
-*.ist
-*.lof
 *.log
-*.lot
-*.maf
-*.mtc
-*.mtc1
 *.nav
-*.out 
+*.out
 *.pdf
 *.snm
 *.toc
+*.vrb