Set nodejs version

src/freedombone-utils-nodejs

 #!/bin/bash
 npm install -g npm@${NPM_VERSION} --save
 npm install -g n@${NODEJS_N_VERSION} --save
+n ${NODEJS_VERSION}
 npm install -g pug@2.0.0-beta6 --save
 npm install -g graceful-fs@4.1.10 --save
 npm install -g minimatch@3.0.3 --save
-cp /usr/bin/nodejs /usr/local/bin/node
+cp /usr/local/bin/node /usr/bin/nodejs
 EOF
     chroot "${rootdir}" chmod +x /root/install-nodejs.sh
     chroot "${rootdir}" /root/install-nodejs.sh
 
     npm install -g npm@${NPM_VERSION} --save
     npm install -g n@${NODEJS_N_VERSION} --save
+    n ${NODEJS_VERSION}
     npm install -g pug@2.0.0-beta6 --save
     npm install -g graceful-fs@4.1.10 --save
     npm install -g minimatch@3.0.3 --save
 
-    cp /usr/bin/nodejs /usr/local/bin/node
+    cp /usr/local/bin/node /usr/bin/nodejs
 
     # node seems tricky so here we're going to double check
     # that the versions we expect did get installed