build: Create bashrc if not present for nvm

Change-Id: Ie1582981166664d51b40a6b3621a5b59456ea2bb
Signed-off-by: Philippe Coval <p.coval@samsung.com>

install.sh

@@ -23,6 +23,7 @@ mkdir -p mozilla-iot
 cd mozilla-iot
 
 # Install and configure nvm
+[ -e "${HOME}/.bashrc" ] || touch "${HOME}/.bashrc"
 curl -o- https://github.com/raw/creationix/nvm/${NVM_VERSION}/install.sh | bash
 # The following 2 lines are installed into ~/.bashrc by the above,
 # but on the target, sourcing ~/.bashrc winds up being a no-op (when sourced