added python and npm version restrictions

Author: SubhenduShekhar

README.md

@@ -21,10 +21,10 @@
 
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-<center style="color:red">
+<div align="center" style="color:red">
 <p style="font-size:20px">We are restricting NPM and Python packages to 2.0.0<br/>
 Further versions will only be provided for dotnet and java</p>
-</center>
+</div>
 
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