diff --git a/.DS_Store b/.DS_Store
index fcf0211..1a89e6d 100644
Binary files a/.DS_Store and b/.DS_Store differ
diff --git a/.gitattributes b/.gitattributes
index dfe0770..d4b635f 100644
--- a/.gitattributes
+++ b/.gitattributes
@@ -1,2 +1,5 @@
 # Auto detect text files and perform LF normalization
 * text=auto
+
+cmds_sh
+test.py
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/README.md b/README.md
index b71352e..e23d989 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,29 @@
 # bioinfor_tools
- 
+![Stars](https://img.shields.io/pypi/v/bioinfor-tools.svg)
+
+## Install
+```angular2html
+pip install bioinfor-tools
+```
+
+## Quick Guide
+```angular2html
+import bioinfor_tools as bt
+import random
+
+# Decorate a function that generates a Linux command.
+@bt.cmd_wrapper(n_jobs=2)
+def foo(a='hello'):
+    cmd_list = ['sleep {} && echo done!'.format(random.randint(3, 5)) for _ in range(6)]
+    return cmd_list, a
+
+foo()
+
+# using qusb.
+@bt.cmd_wrapper(n_jobs=2,use_qsub=True)
+def foo2(a='hello'):
+    cmd_list = ['sleep {} && echo done!'.format(random.randint(3, 5)) for _ in range(6)]
+    return cmd_list, a
+
+foo2()
+```
\ No newline at end of file