add easier instruction

README.md

@@ -14,14 +14,14 @@ Siona runs on the following private blockchains:
 Install redis-server and cpan:
 
 ```
-sudo apt-get install redis-server
-sudo apt-get install libpath-tiny-perl
+sudo apt-get install redis-server -y
+sudo apt-get install libpath-tiny-perl -y
 ```
 
 Install JSON::Any.pm and Redis.pm Perl modules:
 ```
-sudo cpan install JSON::Any.pm
-sudo cpan install Redis.pm
+yes | sudo cpan install JSON::Any.pm
+yes | sudo cpan install Redis.pm
 ```
 
 # Git clone