Attempt to fix Travis tests

Author: naomiquinones

nvm.sh

@@ -2345,11 +2345,11 @@ nvm() {
     return $?
   fi
 
-  argsList=("$@")
-  for i in ${argsList[@]}
+  argsList="$@"
+  for i in "${argsList[@]-}"
   do
     case $i in
-      'help'|'-help'|'--help')
+      '-h'|'help'|'-help'|'--help')
       local NVM_IOJS_PREFIX
       NVM_IOJS_PREFIX="$(nvm_iojs_prefix)"
       local NVM_NODE_PREFIX