Initialise npm for user bfa

bin/installbfa.sh

@@ -49,12 +49,12 @@ function web3install
         cd ~bfa
         test -r package.json ||
             info Initialising nodejs. &&
-            sudo -u bfa npm init -y
+            sudo --set-home -u bfa npm init -y
     )
     # nodejs package(s) that we need.
-    echo 'require("web3")' | sudo -u bfa nodejs 2>/dev/null && return
+    echo 'require("web3")' | sudo --set-home -u bfa nodejs 2>/dev/null && return
     info Installing nodejs module: web3
-    sudo -u bfa npm install web3
+    sudo --set-home -u bfa npm install web3
 }
 
 function golanginstall