Install nvm versioning to frameworks

toolset/setup/linux/languages/nodejs.sh

@@ -1,13 +1,9 @@
 #!/bin/bash
 
-RETCODE=$(fw_exists ${IROOT}/nvm-0.24.1.installed)
+RETCODE=$(fw_exists ${IROOT}/nvm.installed)
 [ ! "$RETCODE" == 0 ] || { return 0; }
 
-# Install nvm (node version manager) v0.24.1
-fw_get https://raw.githubusercontent.com/creationix/nvm/v0.24.1/install.sh | \ 
-	NVM_DIR=${IROOT}/nvm bash
+fw_get https://raw.githubusercontent.com/creationix/nvm/v0.24.1/install.sh
+NVM_DIR=$IROOT/nvm bash install.sh
 
-export NVM_HOME=${IROOT}/nvm
-export PATH=$PATH:$NVM_HOME/nvm.sh
-
-touch ${IROOT}/nvm-0.24.1.installed
+touch ${IROOT}/nvm.installed