generic university logo (invites replacement instead of tarnishing NYU's name)

- also deletes some unused graphics (why distribute these unused files, confusing)
bootstrapped
updates to style files

- interfaces better with Bootstrap
d3 instead of raphael

more hipster
gets rid of error messages that was appear and end of debug sequence
major updates to the stroop example

- bootstrapped all the CSS.  this way CSS isn't a mystery novel of weird conventions.  read getbootstrap.com for more info
- nicer looking templates
- documented some of the templates better inside comments
- instructions now use the psiturk Instruction() object which steps though multiple pages of instructions
- simplified task a bit and made it look nicer (uses d3.js now)
- made completeHIT() be a part of the psiturk object itself.
stepping version number since psiturk.js has major changes
should mention error messages in the docs
update docs for new example directory structure
documenting changes to psiTurk.js object, including the doInstructions() method
more helpful error message

- directs people to set host to `0.0.0.0` (easier than knowing your ip address)
updates/first draft to the documentation of the simple "stroop" example