.gitignore:

1. Added sections and comments to gitignore file for better readability.
2. Added more entries to the Vim list (there was already two entries
   for Vim.)
3. Added entries for the following sections/areas: OS &
   Package formats.

jlk

.gitignore

@@ -1,3 +1,35 @@
-*.sw*
+# Local stuff
+# This section is devoted to this project
+##############################
 doc/tags
+
+# Vim stuff
+##############################
+*.s[a-w][a-z]
+*.un~
+Session.vim
 .netrwhist
+*~
+
+# Packages
+##############################
+# it's better to unpack these files and commit the raw source
+# git has its own built in compression methods
+*.7z
+*.dmg
+*.gz
+*.iso
+*.jar
+*.rar
+*.tar
+*.zip
+
+# OS generated files
+##############################
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db