Add JSON specification of main structures.
diff --git a/.gitignore b/.gitignore
index 2a03df8..c529082 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,4 +8,13 @@
 CPackConfig.cmake
 CPackSourceConfig.cmake
 Makefile
-*.bin
\ No newline at end of file
+*.bin
+specification/*.out
+specification/*.pdf
+specification/*.toc
+specification/*.lot
+specification/*.log
+specification/*.fls
+specification/*.fdb_*
+specification/*.*gz
+specification/*aux
\ No newline at end of file