Update README.md

README.md

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 # BORA - Build Once Run Always
 BORA is a static monitoring framework, which aims to minimize the maintaining effort on the page and offers a flexible way to add and remove data items. Also, BORA addresses the limitation of ADEI server by building a retrofit interface that is capable of handling concurrent connections.
 
-##Contents##
-* [Installation] (#Installation)
-* [Usage] (# Usage)
-
 <br />
 ##Installation
 Following demonstrates an example on BORA installation guide in openSUSE operating system. 
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 <br />
 ##Usage
 
-In principle, there are 2 viewer mode in BORA: designer mode and status mode. In designer mode  (http://localhost:\<port\>/designer), users are allowed to style the data with multifarious features whereas the status mode (http://localhost:\<port\>/status) displays the data styling from the designer mode to the viewers. 
+In principle, there are 2 viewer modes in BORA: designer mode and status mode. In designer mode  (http://localhost:\<port\>/designer), users are allowed to style the data with multifarious features whereas the status mode (http://localhost:\<port\>/status) displays the data styling from the designer mode to the viewers. 
 
 **Data registration**