Add gitignore

.gitignore

+# Latex intermediary files
+*.acn
+*.acr
+*.alg
+*.aux
+*.bbl
+*.blg
+*.dvi
+*.fdb_latexmk
+*.glg
+*.glo
+*.gls
+*.idx
+*.ilg
+*.ind
+*.ist
+*.lof
+*.log
+*.lot
+*.maf
+*.mtc
+*.mtc0
+*.nav
+*.nlo
+*.out
+*.pdfsync
+*.ps
+*.snm
+*.synctex.gz
+*.toc
+*.vrb
+*.xdy
+*.tdo
+*.run.xml
+*.bcf
+*.pyg
+
+# Final output PDF
+report.pdf
\ No newline at end of file