Add development environment notes recommending rbenv
Add development environment notes recommending rbenv
erose/studentinsights,erose/studentinsights,jhilde/studentinsights,studentinsights/studentinsights,erose/studentinsights,studentinsights/studentinsights,jhilde/studentinsights,jhilde/studentinsights,erose/studentinsights,jhilde/studentinsights,studentinsights/studentinsights,studentinsights/studentinsights