Disable Travis for now
Stubbing out classes and adding documentation
Work on initial docs

This adds a docs directory within the main repository that will hold the
documentation for Select2.  Instead of having a separate repository, this will
allow the documentation to be maintained alongside the code.  The documentation
will still be hosted on GitHub using GitHub Pages, but it will be deployed to
from the code branch.
Add basic dropdown and container width detection

This adds back the basic container width options that were
previously documented.  On top of those, numbers that are passed
in without units will be assumed to be pixels to allow maintain
units.
Create the basic container