[mdm tools] Running mdm tools install fails on clean machine because node installer requires re-sourcing ~/.bash_profile or ~/.bash_rc

[pingpongboss]

☐ node
nodejs is not installed
Installing nodejs v6...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 7766 100 7766 0 0 11671 0 --:--:-- --:--:-- --:--:-- 11678
=> Downloading nvm from git to '/Users/markwei/.nvm'
=> Cloning into '/Users/markwei/.nvm'...
remote: Counting objects: 6276, done.
remote: Total 6276 (delta 0), reused 0 (delta 0), pack-reused 6275
Receiving objects: 100% (6276/6276), 1.79 MiB | 713.00 KiB/s, done.
Resolving deltas: 100% (3885/3885), done.

• (HEAD detached at v0.31.2)
  master

=> Appending source string to /Users/markwei/.bash_profile
=> Close and reopen your terminal to start using nvm
Downloading https://nodejs.org/dist/v6.10.1/node-v6.10.1-darwin-x64.tar.gz...
######################################################################## 100.0%
Now using node v6.10.1 (npm v3.10.10)
Creating default alias: default -> 6 (-> v6.10.1)
Found 3.10.10
nodejs version 3 already installed.
☐ gh
/Users/markwei/github/material-motion-tools/contributor_tools/tools/installers/gh.installer: line 23: npm: command not found
npm install failed, requesting sudo to run npm install in /Users/markwei/github/material-motion-tools/third_party/gh...
Password:
sudo: npm: command not found
☐ yo
Requesting sudo to install yo...
sudo: npm: command not found