Add .swp files to the gitignore.
Fix quoting issues on the grep that checks if we should append to httpd.conf.  Fixes #5.
Merge branch 'develop' of https://github.com/NEU-DSG/plattr into develop

especially if it merges an updated upstream into a topic branch.
Use neu_libraries/plattr box image

Switches this project over to the prepackaged box image that I made just
for it, which should significantly cut down on the time/flakiness
factor inherent in doing a fresh vagrant up.
Add the box build information to this project

Rather than create a separate git repo (my initial plan), I've placed
all of the stuff for building the neu_libraries/plattr box that this
project now depends on in a subdirectory called box/.  This should make
it easier to work with.  This commit also moves borisrc_base into the
box/ subdirectory because we build boris as part of that step rather
than provisioning, and we also update the .gitignore file to not include
any .box files generated by vagrant package.