fix pdf failing to upload because gitignore

Author: dayanyalfaro

.gitignore

@@ -25,10 +25,9 @@
 # these rules might exclude image files for figures etc.
 # *.ps
 # *.eps
-*.pdf
 
 ## Generated if empty string is given at "Please type another file name for output:"
-.pdf
+
 
 ## Bibliography auxiliary files (bibtex/biblatex/biber):
 *.bbl