changes of intial setup

Hey guys!

I had some smalls problems here to run the Neighbor.ly at first time. For example:

=> ExecJS::RuntimeUnavailable: Could not find a JavaScript runtime. See https://github.com/sstephenson/execjs for a list of available runtimes.

To solve it I added the gem "therubyracer" on Gemfile.

I also had to create an VM with mod_passenger and because this some things were added to .gitignore.