Modified `README` and added `requirements.txt`

Changes:

* Modified `README` to add installation instructions for python
* Added `requirements.txt` for installation with `pip`
* Also fixed some minor typos in various files
Added `server_info` method on server

* `server_info` replaces `validate_version`. See
https://github.com/iteloo/the_island/wiki/server_info.
* Message errors are now caught and simply logged (instead of
terminating the program)
Minor cleanup

* Removed `__author__` metadata
* Added some annotations to `player.py`
Updated clients to use new message sending format
¡¡¡Job stage now works!!!

* Updated client methods to conform to new method declarations
* JobStage now inherits from ReadyStage
* Added preliminary tests for JobStage
* Added creation of a JobStage at beginning of game

Minor fixes/changes

* Fixed message forwarding
* Fixed minor typo in `job_selected`
* Fixed bug where `update_job_selections` messages were sent with a dictionary of python `Player` objects instead of player ids
* Removed `production.coffee`
* Removed some imports that are circular
Added Heroku support

Configure for Heroku deployment

* Added Procfile to define processes
* Added runtime.txt to specify python 3.3.4 runtime
* Websocket url use directly location.host
* Server PORT config now loads from environ vars
* runserver.py now takes in optional port argument as -p

Configured buildpack to compile coffeescript on deployment

* Using multi-buildpack that includes custom coffeescript buildpack and official python buildpack
* Added package.json to specify node and npm version and coffee-script dependency

Added coffeescript compilation functionality on server start

* Added coffeescript compiler dependency to requirements.txt
* Runserver.py now takes in '-c' option to compile coffeescript on server start

Minor changes:

* Moved main.js to assets/ directory
* Modified places in code that reference main.js to reflect new location
Added `day_stage.py`

* No implementation of `DayStage` yet

Set up `DayStage`