Recently formattet my chromebook pixel and wanted to try everyone's change of install.sh so I've merged pull https://github.com/skycocker/chromebrew/pull/176 into mine to try it.

Fixed the ln line and fixed node error, as well as changed the new name of node to follow nodejs.org naming convetion of 6.x versions

Change 'Nodejs' to Node

NameError between package name (node) and class name (Nodejs) caused an error on line 32 of crew.