.gitignore in commonmarker-rouge-1.5.0 vs .gitignore in commonmarker-rouge-1.5.1

@@ -8,25 +8,30 @@
 /spec/examples.txt
 /test/tmp/
 /test/version_tmp/
 /tmp/
 
+## IDE
+/.idea
+
 ## Specific to RubyMotion:
 .dat*
 .repl_history
 build/
 
 ## Documentation cache and generated files:
 /.yardoc/
 /_yardoc/
 /doc/
 /rdoc/
+/docs/*.html
 
 ## Environment normalization:
 /.bundle/
 /vendor/bundle
 /lib/bundler/man/
 Gemfile.lock
+Gemfile.*.lock
 .ruby-version
 .ruby-gemset
 
 # unless supporting rvm < 1.11.0 or doing something fancy, ignore this:
 .rvmrc