Simplify .gitignore

.gitignore

@@ -1,31 +1,11 @@
 # Logs
-logs
 *.log
 
-# Runtime data
-pids
-*.pid
-*.seed
-
-# Directory for instrumented libs generated by jscoverage/JSCover
-lib-cov
-
 # Coverage directory used by tools like istanbul
 coverage
 
-# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
-.grunt
-
-# Compiled binary addons (http://nodejs.org/api/addons.html)
-build/Release
-
 # Dependency directory
-# Deployed apps should consider commenting this line out:
-# see https://npmjs.org/doc/faq.html#Should-I-check-my-node_modules-folder-into-git
 node_modules
 
 # OS X
 .DS_Store
-
-# Vagrant directory
-.vagrant