rm redundant words

README.md

@@ -13,24 +13,22 @@ It depends on [requests](https://github.com/kennethreitz/requests) library,and s
 
 ## Install
 
-### Depend 
-The [**mysql-connector-python**](https://pypi.python.org/pypi/mysql-connector-python/2.0.4) module should be installed manually first:        
+##### depend 
+[**mysql-connector-python**](https://pypi.python.org/pypi/mysql-connector-python/2.0.4) should be installed manually first:        
 ```
 pip install http://cdn.mysql.com/Downloads/Connector-Python/mysql-connector-python-2.0.4.zip#md5=3df394d89300db95163f17c843ef49df
 ```
 
-### PyPI
+##### pypi
 
 The main benefit of using **pip** is that it installs all
 depended libraries automatically.    
 Another nice feature is easy to manipulate:
 
-```pip install robotframework-interfacelibrary```                         #install
-
-```pip install -U robotframework-interfacelibrary```                   #upgrade to **stable** version         
-```pip install -U robotframework-interfacelibrary --pre```       #upgrade to **lastest** release
-
-```pip uninstall robotframework-interfacelibrary```                     #uninstall
+```pip install robotframework-interfacelibrary```                         # install    
+```pip install -U robotframework-interfacelibrary```                   # to stable            
+```pip install -U robotframework-interfacelibrary --pre```       # to lastest         
+```pip uninstall robotframework-interfacelibrary```                     # uninstall
 
 ## Usage Guide:
 Here is a sample test case.