.gitignore in fast_excel-0.1.4 vs .gitignore in fast_excel-0.1.5

@@ -1,10 +1,13 @@
-libxlsxwriter
 .ruby-version
 try.c
 try.rb
 gen.rb
 gen_ffi.rb
 *.xlsx
 a.out
 .DS_Store
-*.gem
\ No newline at end of file
+*.gem
+libxlsxwriter/dev
+libxlsxwriter/docs
+libxlsxwriter/examples
+libxlsxwriter/test