added post provisioning script

took manual shell commands from the readme that user has to do and put them $script variable in VagrantFile and set it up to run as a "shell" provision so that its automated
corrected syntax error, moved script to top of file aligned to the left
remove manual commands from README instructions
Added commands to sh script, added sh script to VagrantFile

removed the online shell commands from the VagrantFile that installs nodejs so that rails server works, and set VagrantFile to load the external sh script so that the Vagrant file does not become populated with sh scripting
Merge pull request #7 from william-c-martin-iii/feat_add_shell_scripts

Move shell scripts to VagrantFile to be automated