Cosmetic improvements to install process
Cosmetic improvements to install process

- Remove apostrophes in comments that break `vim` syntax highlighting
- Add "Installing/updating npm" and "npm-check-updates" messages
- Reduce `composer` output by adding `--no-ansi` flag
- Avoid a bunch of extra `curl` output during `rvm` and `ruby` install

Varying-Vagrant-Vagrants/VVV,tomjn/varying-vagrant-vagrants,speartail/VVV,clreed87/VVV,saucal/VVV,trepmal/varying-vagrant-vagrants,WybrenKoelmans/VVV,saucal/VVV,tomjn/varying-vagrant-vagrants,trepmal/varying-vagrant-vagrants,saucal/VVV,DrewAPicture/varying-vagrant-vagrants,Varying-Vagrant-Vagrants/VVV,clreed87/VVV,Varying-Vagrant-Vagrants/VVV,WybrenKoelmans/VVV,DrewAPicture/varying-vagrant-vagrants,speartail/VVV