update doc ,ready to push to npm

.gitignore

@@ -1,3 +1,8 @@
+cert/**/*.srl
+cert/**/*.key
+cert/**/*.crt
+cert/**/*.csr
+tmp.txt
 .*.swp
 ._*
 .DS_Store
@@ -6,39 +11,16 @@
 .lock-wscript
 .svn
 .wafpickle-*
-tmp.txt
 CVS
 npm-debug.log
-cert/**/*.srl
-cert/**/*.key
-cert/**/*.crt
-cert/**/*.csr
-
-# 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
-# Commenting this out is preferred by some people, see
-# https://npmjs.org/doc/faq.html#Should-I-check-my-node_modules-folder-into-git
 node_modules
-
-# Users Environment Variables
 .lock-wscript