Modified the requirements doc, removed scenes

* The white house scene will be the only one included for this version.
* Edited some past spelling mistakes
* Edited number of suspects the game will have (used to be 3 when we were initially planning the gameplay, but we decided then that the vice president would be the only suspect. The change never made it in).
Updated Schedule, fixed continuity in goals
Cleaned up the repository

* Design docs moved into mockups directory
* old Design docs deleted (with old and inaccurate information)
Merge branch 'master' of github.com:brwhale/president-game