need to run command as root user

add sudo to lines 32 & 33

Author: kcai2TG

benchmark/tigergraph/README

@@ -29,8 +29,8 @@ $ sudo pip install --upgrade virtualenv
 $ sudo pip install tornado
 $ sudo pip install neo4j-driver
 $ sudo pip install requests
-$ apt-get install libcurl4-openssl-dev
-$ apt-get install libssl-dev
+$ sudo apt-get install libcurl4-openssl-dev
+$ sudo apt-get install libssl-dev
 $ sudo pip install pycurl