Pi just reboots on its own

Everything seems to be running fine until I get to this point in the install
I get the warnings…then when the last line is running my Pi just reboots.
I have run it twice with the same results.
I am a unix NOOB
Please tell me you are going to sell SD cards with the OS already loaded on then?

Checking connectivity… done.
Submodule path ‘test/fixtures/testapps’: checked out '4f973a1df7c7c0d71deaaca76995651cb924e475’
npm WARN deprecated to-iso-string@0.0.2: to-iso-string has been deprecated, use @segment/to-iso-string instead.
npm WARN deprecated jade@0.26.3: Jade has been renamed to pug, please install the latest version of pug instead of jade
npm WARN deprecated minimatch@0.3.0: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
npm WARN deprecated MD5@1.2.2: deprecated, use lowercase ‘md5@2.x’ from now on
npm WARN deprecated minimatch@2.0.10: Please update to minimatch 3.0.2 or higher to avoid a RegExp DoS issue
npm WARN deprecated node-uuid@1.4.8: Use uuid module instead
[ …] - extract:browserify: sill gunzTarPerm extractEntry lib/function/arithmetic/dotPow.js