gitignore: add vim

Signed-off-by: Mahyar Koshkouei <mk@deltabeard.com>

.gitignore

@@ -31,3 +31,25 @@
 # Debug files
 *.dSYM/
 *.su
+
+### Vim ###
+# Swap
+[._]*.s[a-v][a-z]
+!*.svg  # comment out if you don't need vector files
+[._]*.sw[a-p]
+[._]s[a-rt-v][a-z]
+[._]ss[a-gi-z]
+[._]sw[a-p]
+
+# Session
+Session.vim
+Sessionx.vim
+
+# Temporary
+.netrwhist
+*~
+# Auto-generated tag files
+tags
+# Persistent undo
+[._]*.un~
+