fix npm paths

install.sh

@@ -12,12 +12,12 @@ export NPM_CONFIG_PREFIX=/opt/digd.js
 curl -fsSL https://bit.ly/install-min-node -o ./install-node.sh.tmp
 bash ./install-node.sh.tmp
 rm ./install-node.sh.tmp
-/opt/digd.js/bin/npm install -g npm@4
+/opt/digd.js/bin/node /opt/digd.js/bin/npm install -g npm@4
 
 git clone https://git.coolaj86.com/coolaj86/digd.js /opt/digd.js/lib/node_modules/digd.js
 pushd /opt/digd.js/lib/node_modules/digd.js
   git checkout v1.1
-  /opt/digd.js/bin/npm install
+  /opt/digd.js/bin/node /opt/digd.js/bin/npm install
 popd
 
 sudo rsync -v /opt/digd.js/lib/node_modules/digd.js/dist/etc/systemd/system/digd.js.service /etc/systemd/system/