Updated README.md

README.md

@@ -37,10 +37,10 @@ Our code requires Python 3.6, and the Charm-Crypto library (v0.50) built with th
 
 1. Relic Toolkit: https://jhuisi.github.io/charm/relic.html#charm-with-relic
 
-   (Download Relic from its [github repository](https://github.com/relic-toolkit/relic) and checkout the version identified by commit id `0534bd5cc7`.)
+   (Please download Relic from its [github repository](https://github.com/relic-toolkit/relic) and checkout the version identified by commit id `0534bd5cc7`.)
 2. Charm-Crypto:  https://jhuisi.github.io/charm/install_source.html#platform-install-manual
    
-   (Download Charm from its [github repository](https://github.com/JHUISI/charm))
+   (Please download Charm from its [github repository](https://github.com/JHUISI/charm))
 > Note: Charm-Crypto additionally requires PBC (v0.5.14) and GMP (v6.2.1). 
 
 Finally, use the following command to install Openpyxl (v3.0.6) and Texttable (v1.6.3):