Add wrapping curly braces to ensure that the entire scripts are downloaded.

If the closing curly brace isn't present, the script will error out.

install.sh

@@ -2,6 +2,8 @@
 
 set -e
 
+{ # this ensures the entire script is downloaded #
+
 nvm_has() {
   type "$1" > /dev/null 2>&1
 }
@@ -241,3 +243,5 @@ nvm_reset() {
 }
 
 [ "_$NVM_ENV" = "_testing" ] || nvm_do_install
+
+} # this ensures the entire script is downloaded #