Update README.md
Update README.md
updates to allow pg to also be shared, slightly more stable install script for reloads (still takes forever)
Update README.md
Update README.md
Removed webwork2 submodule
Addign a .gitignore file
Update instructions to guide users to clone webwork2 and pg repositories
Changed file permissions on Vagrantfile.
removing submodules
Merge commit '245ac617f2b01ee7e8f7fe82af089c74d2c3c2fe'

Conflicts:
	.gitignore
	README.md
Merge branch 'master' into packaged

Conflicts:
	.gitignore
	.gitmodules
	README.md
	Vagrantfile
	vagrant/bootstrap.sh
	ww_install.pl