Add output folders and LaTeX compilation files to .gitignore

However, compiled PDF files have not been added to .gitignore
intentionally, because I want to them to be part of the repository.

Change-Id: I38174f9480e2c95658dad36ebd0c78dafa50705f
diff --git a/.gitignore b/.gitignore
index e43b0f9..7957073 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,10 @@
 .DS_Store
+output/
+
+# Tex files
+*/informe/*.aux
+*/informe/*.fdb_latexmk
+*/informe/*.fls
+*/informe/*.log
+*/informe/*.out
+*/informe/*.synctex.gz