Add ruby modeline to Vagrant file

Opens up in appropriate mode in Vim and Emacs
Add provider-specific config block to support VMWare Fusion.
Explain VMWare Fusion as alternative to VirtualBox in the README.
Merge pull request #64 from mahipal/add-vmware-fusion-support

Add support for VMWare Fusion.
Merge pull request #50 from yuvipanda/modeline

Add ruby modeline to Vagrant file
fixes RVM aliasing [closes #62]

Fuzzy aliasing no longer worked here, being more strict.
document why we provision bundler

References #49.
rewording
document the new rsync mechanism for sharing folders
set locale-related vars to en_US.UTF-8 [fixes #47]
add parallels desktop support
keep running at closed virtual machine window
Update Vagrantfile

correct wrong grammar
can running => can be running
Merge pull request #66 from jasl/parallels-support

Add Parallels Desktop support
Bump ruby version on the box
Merge pull request #68 from arthurnn/bump-ruby

Bump ruby version on the box
Update Ruby version noted in README to 2.1.1

Ruby version changed to 2.1.1 in this commit, whereas README lists Ruby version as 2.0.0 https://github.com/rails/rails-dev-box/commit/0f2143cd3cc2ab8ec596956ab46e1b34de0724f6
Merge pull request #75 from eliotsykes/patch-1

Update Ruby version noted in README to 2.1.1
Merge remote-tracking branch 'upstream/master'

Conflicts:
	puppet/manifests/default.pp