Add vim swapfiles to .gitignore
diff --git a/.gitignore b/.gitignore
index 4009765..7935785 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 *~
+.*.swp
 CMakeLists.txt.user*
 *.kdev*
 *.bak
@@ -11,4 +12,4 @@
 *.bbl
 *.log
 *.synctex.gz
-ceres.pdf
\ No newline at end of file
+ceres.pdf