Update README.md

Author: xiaosong520

README.md

@@ -223,7 +223,7 @@ pvOptions = new  OptionsPickerView.Builder(this, new OptionsPickerView.OnOptions
 - [WheelView](https://github.com/venshine/WheelView)
 - [androidWheelView](https://github.com/weidongjian/androidWheelView/)
 
-#License
+# License
 
 ```
 Copyright 2014 Bigkoo